我正在使用readmore.js，我想将我的段落扩展两次。
目前，我正在使用一个扩展链接，其值为“更多信息”，单击该链接可显示所有文本。
底部还有一个链接，其值为“较少信息”，单击该链接可隐藏文本：
This is some text and continues for ages...
<a href="#">More information</a>
This is some text and continues for ages...
but is not as long as you think.
<a href="#">Less information</a>
我想添加另一个名为“甚至更多信息”的扩展链接。在这种情况下，“更多信息”将仅显示文本的一部分，而“甚至更多信息”将显示完整文本。看起来像这样：
This is some text and continues for ages...
<a href="#">More information</a>
This is some text and continues for ages...
and it goes on and on and on...
<a href="#">Even more information</a>
This is some text and continues for ages...
and it goes on and on and on...
but not as long as you think.
<a href="#">Less information</a>
此代码段显示了我的当前情况：
$('.example').readmore({
collapsedHeight: 300,
speed: 500,
embedCSS: false,
moreLink: '<a href="#">More information</a>',
lessLink: '<a href="#">Less information</a>',
beforeToggle: function(trigger, element, expanded) {
if (expanded === false) {
element.addClass('remove-after');
} else {
element.removeClass('remove-after');
}
}
});.example+[data-readmore-toggle],
.example[data-readmore] {
display: block;
}
.example[data-readmore]::after {
background: linear-gradient(to bottom, rgba(255, 255, 255, 0), rgba(255, 255, 255, 1) 85%);
bottom: 0;
content: '';
display: inline-block;
height: 250px;
position: absolute;
right: 0;
width: 100%;
}
.remove-after::after {
display: none !important;
}
[data-readmore-toggle] {
margin-left: 15px;
}
img {
float: right;
}<script src="https://code.jquery.com/jquery-1.12.4.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/readmore-js@2.1.0/readmore.min.js"></script>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet" />
<script src="https://stackpath.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<div class="example col-md-12">
<p>They say everything looks better with odd numbers of things. But sometimes I put even numbers—just to upset the critics. Don't be afraid to make these big decisions. Once you start, they sort of just make themselves. Now let's put some happy little
clouds in here. We can always carry this a step further. There's really no end to this. Think about a cloud. Just float around and be there. We want to use a lot pressure while using no pressure at all.</p>
<p>Look around, look at what we have. Beauty is everywhere, you only have to look to see it. That's the way I look when I get home late; black and blue. All you have to do is let your imagination go wild. We have a fantastic little sky!</p>
<p>All kinds of happy little splashes. We don't want to set these clouds on fire. I was blessed with a very steady hand; and it comes in very handy when you're doing these little delicate things. It looks so good, I might as well not stop. We need dark
in order to show light. I really recommend you use odorless thinner or your spouse is gonna run you right out into the yard and you'll be working by yourself.</p>
<img src="https://dummyimage.com/200x200/2d5cc2/fff" />
<p>Van Dyke Brown is a very nice brown, it's almost like a chocolate brown. We're trying to teach you a technique here and how to use it. This present moment is perfect simply due to the fact you're experiencing it.</p>
<p>If what you're doing doesn't make you happy - you're doing the wrong thing. We spend so much of our life looking - but never seeing. In this world, everything can be happy. Everyone is going to see things differently - and that's the way it should be.
And just raise cain.</p>
<p>There's nothing wrong with having a tree as a friend. Maybe there was an old trapper that lived out here and maybe one day he went to check his beaver traps, and maybe he fell into the river and drowned. Tree trunks grow however makes them happy.</p>
<p>Let your imagination be your guide. You could sit here for weeks with your one hair brush trying to do that - or you could do it with one stroke with an almighty brush. We wash our brush with odorless thinner. Every highlight needs it's own personal
shadow. Don't kill all your dark areas - you need them to show the light. Working it up and down, back and forth.</p>
<p>Don't forget to tell these special people in your life just how special they are to you. The only thing worse than yellow snow is green snow. That's why I paint - because I can create the kind of world I want - and I can make this world as happy as
I want it. Let's build an almighty mountain. You have to make almighty decisions when you're the creator.</p>
<p>We have a fantastic little sky! Everybody's different. Trees are different. Let them all be individuals. Just go out and talk to a tree. Make friends with it. Go out on a limb - that's where the fruit is. There are no mistakes. You can fix anything
that happens.</p>
<p>You have to make those little noises or it won't work. We have no limits to our world. We're only limited by our imagination. I want everbody to be happy. That's what it's all about.</p>
<p>Nice little clouds playing around in the sky. It's a super day, so why not make a beautiful sky? We spend so much of our life looking - but never seeing. The secret to doing anything is believing that you can do it. Anything that you believe you can
do strong enough, you can do. Anything. As long as you believe. Everything's not great in life, but we can still find beauty in it.</p>
<p>If you've been in Alaska less than a year you're a Cheechako. You don't have to be crazy to do this but it does help. I'm going to mix up a little color. We’ll use Van Dyke Brown, Permanent Red, and a little bit of Prussian Blue. And I will hypnotize
that just a little bit. Nothing's gonna make your husband or wife madder than coming home and having a snow-covered dinner.</p>
<p>There it is. Don't fiddle with it all day. No worries. No cares. Just float and wait for the wind to blow you around.</p>
<p>All you need to paint is a few tools, a little instruction, and a vision in your mind. Let's put a touch more of the magic here. Now let's put some happy little clouds in here. We'll lay all these little funky little things in there. But we're not there
yet, so we don't need to worry about it. All you have to learn here is how to have fun.</p>
</div>
答案 0 :(得分：4)
我认为更好的方法是直接修改readmore.js插件。因此，我添加了一个步骤和一个新标签：
$('article').readmore({
speed: 500,
collapsedHeight:200,
collapsedMoreHeight: 400, // Always bigger than collapsedHeigh. There isn't any control to that. Be careful.
moreLink: '<a class="white-shadow" href="#">More information</a>',
evenMoreLink: '<a class="white-shadow" href="#">Even More informations</a>', // Add new label
lessLink: '<a href="#">Less information</a>'
});
我所做的最大改变是：
var $element = $(element),
newHeight = '',
newLink = '',
expanded = false,
collapsedHeight = $element.data('collapsedHeight'),
collapsedMoreHeight = this.options.collapsedMoreHeight; // add an Even More informations
if ($element.data('expandedHeight') <= collapsedMoreHeight){
//This is the normal code if the article's height is smaller than my new option
if ($element.height() <= collapsedHeight) {
newHeight = $element.data('expandedHeight') + 'px';
newLink = 'lessLink';
expanded = true;
}
else {
newHeight = collapsedHeight;
newLink = 'moreLink';
}
} else {
//Here it works the new step: 'Even More informations'
if ($element.height() <= collapsedHeight) {
newHeight = collapsedMoreHeight;
newLink = 'evenMoreLink';
expanded = false;
} else if ($element.height() > collapsedHeight && $element.height() <= collapsedMoreHeight){
newHeight = $element.data('expandedHeight') + 'px';
newLink = 'lessLink';
expanded = true;
}
else {
newHeight = collapsedHeight;
newLink = 'moreLink';
}
}
// This is the new Readmore.js file. Save this in external file.
/*!
* @preserve
*
* Readmore.js jQuery plugin
* Author: @jed_foster
* Project home: http://jedfoster.github.io/Readmore.js
* Licensed under the MIT license
*
* Debounce function from http://davidwalsh.name/javascript-debounce-function
*/
/* global jQuery */
(function(factory) {
if (typeof define === 'function' && define.amd) {
// AMD
define(['jquery'], factory);
} else if (typeof exports === 'object') {
// CommonJS
module.exports = factory(require('jquery'));
} else {
// Browser globals
factory(jQuery);
}
}(function($) {
'use strict';
var readmore = 'readmore',
defaults = {
speed: 100,
collapsedHeight: 50,
collapsedMoreHeight: 150, // add an Even More informations Height
heightMargin: 16,
moreLink: '<a href="#">More informations</a>',
evenMoreLink: '<a href="#">Even more informations</a>', // add new label
lessLink: '<a href="#">Close</a>',
embedCSS: true,
blockCSS: 'display: block; width: 100%;',
startOpen: false,
// callbacks
blockProcessed: function() {},
beforeToggle: function() {},
afterToggle: function() {}
},
cssEmbedded = {},
uniqueIdCounter = 0;
function debounce(func, wait, immediate) {
var timeout;
return function() {
var context = this, args = arguments;
var later = function() {
timeout = null;
if (! immediate) {
func.apply(context, args);
}
};
var callNow = immediate && !timeout;
clearTimeout(timeout);
timeout = setTimeout(later, wait);
if (callNow) {
func.apply(context, args);
}
};
}
function uniqueId(prefix) {
var id = ++uniqueIdCounter;
return String(prefix == null ? 'rmjs-' : prefix) + id;
}
function setBoxHeights(element) {
var el = element.clone().css({
height: 'auto',
width: element.width(),
maxHeight: 'none',
overflow: 'hidden'
}).insertAfter(element),
expandedHeight = el.outerHeight(),
cssMaxHeight = parseInt(el.css({maxHeight: ''}).css('max-height').replace(/[^-\d\.]/g, ''), 10),
defaultHeight = element.data('defaultHeight');
el.remove();
var collapsedHeight = cssMaxHeight || element.data('collapsedHeight') || defaultHeight;
// Store our measurements.
element.data({
expandedHeight: expandedHeight,
maxHeight: cssMaxHeight,
collapsedHeight: collapsedHeight
})
// and disable any `max-height` property set in CSS
.css({
maxHeight: 'none'
});
}
var resizeBoxes = debounce(function() {
$('[data-readmore]').each(function() {
var current = $(this),
isExpanded = (current.attr('aria-expanded') === 'true');
setBoxHeights(current);
// Resize only if expanded
if(isExpanded){
current.css({
height: current.data('expandedHeight')
});
}
});
}, 100);
function embedCSS(options) {
if (! cssEmbedded[options.selector]) {
var styles = ' ';
if (options.embedCSS && options.blockCSS !== '') {
styles += options.selector + ' + [data-readmore-toggle], ' +
options.selector + '[data-readmore]{' +
options.blockCSS +
'}';
}
// Include the transition CSS even if embedCSS is false
styles += options.selector + '[data-readmore]{' +
'transition: height ' + options.speed + 'ms;' +
'overflow: hidden;' +
'}';
(function(d, u) {
var css = d.createElement('style');
css.type = 'text/css';
if (css.styleSheet) {
css.styleSheet.cssText = u;
}
else {
css.appendChild(d.createTextNode(u));
}
d.getElementsByTagName('head')[0].appendChild(css);
}(document, styles));
cssEmbedded[options.selector] = true;
}
}
function Readmore(element, options) {
this.element = element;
this.options = $.extend({}, defaults, options);
embedCSS(this.options);
this._defaults = defaults;
this._name = readmore;
this.init();
// IE8 chokes on `window.addEventListener`, so need to test for support.
if (window.addEventListener) {
// Need to resize boxes when the page has fully loaded.
window.addEventListener('load', resizeBoxes);
window.addEventListener('resize', resizeBoxes);
}
else {
window.attachEvent('load', resizeBoxes);
window.attachEvent('resize', resizeBoxes);
}
}
Readmore.prototype = {
init: function() {
var current = $(this.element);
current.data({
defaultHeight: this.options.collapsedHeight,
heightMargin: this.options.heightMargin
});
setBoxHeights(current);
var collapsedHeight = current.data('collapsedHeight'),
heightMargin = current.data('heightMargin');
if (current.outerHeight(true) <= collapsedHeight + heightMargin) {
// The block is shorter than the limit, so there's no need to truncate it.
if (this.options.blockProcessed && typeof this.options.blockProcessed === 'function') {
this.options.blockProcessed(current, false);
}
return true;
}
else {
var id = current.attr('id') || uniqueId(),
useLink = this.options.startOpen ? this.options.lessLink : this.options.moreLink;
current.attr({
'data-readmore': '',
'aria-expanded': this.options.startOpen,
'id': id
});
current.after($(useLink)
.on('click', (function(_this) {
return function(event) {
_this.toggle(this, current[0], event);
};
})(this))
.attr({
'data-readmore-toggle': id,
'aria-controls': id
}));
if (! this.options.startOpen) {
current.css({
height: collapsedHeight
});
}
if (this.options.blockProcessed && typeof this.options.blockProcessed === 'function') {
this.options.blockProcessed(current, true);
}
}
},
toggle: function(trigger, element, event) {
if (event) {
event.preventDefault();
}
if (! trigger) {
trigger = $('[aria-controls="' + this.element.id + '"]')[0];
}
if (! element) {
element = this.element;
}
/////////////////////////
// I changed this part //
/////////////////////////
var $element = $(element),
newHeight = '',
newLink = '',
expanded = false,
collapsedHeight = $element.data('collapsedHeight'),
collapsedMoreHeight = this.options.collapsedMoreHeight; // add an Even More informations
if ($element.data('expandedHeight') <= collapsedMoreHeight){
//This is the normal code if the article's height is smaller than my new option
if ($element.height() <= collapsedHeight) {
newHeight = $element.data('expandedHeight') + 'px';
newLink = 'lessLink';
expanded = true;
}
else {
newHeight = collapsedHeight;
newLink = 'moreLink';
}
} else {
//Here it works the new step: 'Even More informations'
if ($element.height() <= collapsedHeight) {
newHeight = collapsedMoreHeight;
newLink = 'evenMoreLink';
expanded = false;
} else if ($element.height() > collapsedHeight && $element.height() <= collapsedMoreHeight){
newHeight = $element.data('expandedHeight') + 'px';
newLink = 'lessLink';
expanded = true;
}
else {
newHeight = collapsedHeight;
newLink = 'moreLink';
}
}
////////////////
// End change //
////////////////
// Fire beforeToggle callback
// Since we determined the new "expanded" state above we're now out of sync
// with our true current state, so we need to flip the value of `expanded`
if (this.options.beforeToggle && typeof this.options.beforeToggle === 'function') {
this.options.beforeToggle(trigger, $element, ! expanded);
}
$element.css({'height': newHeight});
// Fire afterToggle callback
$element.on('transitionend', (function(_this) {
return function() {
if (_this.options.afterToggle && typeof _this.options.afterToggle === 'function') {
_this.options.afterToggle(trigger, $element, expanded);
}
$(this).attr({
'aria-expanded': expanded
}).off('transitionend');
}
})(this));
$(trigger).replaceWith($(this.options[newLink])
.on('click', (function(_this) {
return function(event) {
_this.toggle(this, element, event);
};
})(this))
.attr({
'data-readmore-toggle': $element.attr('id'),
'aria-controls': $element.attr('id')
}));
},
destroy: function() {
$(this.element).each(function() {
var current = $(this);
current.attr({
'data-readmore': null,
'aria-expanded': null
})
.css({
maxHeight: '',
height: ''
})
.next('[data-readmore-toggle]')
.remove();
current.removeData();
});
}
};
$.fn.readmore = function(options) {
var args = arguments,
selector = this.selector;
options = options || {};
if (typeof options === 'object') {
return this.each(function() {
if ($.data(this, 'plugin_' + readmore)) {
var instance = $.data(this, 'plugin_' + readmore);
instance.destroy.apply(instance);
}
options.selector = selector;
$.data(this, 'plugin_' + readmore, new Readmore(this, options));
});
}
else if (typeof options === 'string' && options[0] !== '_' && options !== 'init') {
return this.each(function () {
var instance = $.data(this, 'plugin_' + readmore);
if (instance instanceof Readmore && typeof instance[options] === 'function') {
instance[options].apply(instance, Array.prototype.slice.call(args, 1));
}
});
}
};
}));
// Init plugin
$('article').readmore({
speed: 500,
collapsedHeight:200,
collapsedMoreHeight: 400, // This is your new second height. Always bigger than collapsedHeigh. There isn't any control to that. Be careful.
moreLink: '<a class="white-shadow" href="#">More information</a>',
evenMoreLink: '<a class="white-shadow" href="#">Even More informations</a>', // Add new label
lessLink: '<a href="#">Less information</a>'
}); body { font: 16px/1.5 "Helvetica Neue", Arial, Helvetica, sans-serif; color: #444; }
code { color: #777; font-family: "Source Code Pro", "Menlo", "Courier New", monospace;}
a { color: #178DB1; }
.container { margin: 0 auto; max-width: 960px; }
#info + .readmore-js-toggle { padding-bottom: 1.5em; border-bottom: 1px solid #999; font-weight: bold;}
.white-shadow{
position:relative;
}
.white-shadow:after{
background: linear-gradient(to bottom, rgba(255, 255, 255, 0), rgba(255, 255, 255, 1) 85%);
bottom: 100%;
content: '';
display: inline-block;
height: 150px;
position: absolute;
right: 0;
width: 100%;
}
#demo { padding: 0 10%; }<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="container">
<section id="demo">
<article>
<h2>Artisanal Narwahls</h2>
<p>From this distant vantage point, the Earth might not seem of any particular interest. But for us, it's different. Consider again that dot. That's here. That's home. That's us. On it everyone you love, everyone you know, everyone you ever heard of, every human being who ever was, lived out their lives. The aggregate of our joy and suffering, thousands of confident religions, ideologies, and economic doctrines, every hunter and forager, every hero and coward, every creator and destroyer of civilization, every king and peasant, every young couple in love, every mother and father, hopeful child, inventor and explorer, every teacher of morals, every corrupt politician, every "superstar," every "supreme leader," every saint and sinner in the history of our species lived there – on a mote of dust suspended in a sunbeam.</p>
<p>Space, the final frontier. These are the voyages of the starship Enterprise. Its five year mission: to explore strange new worlds, to seek out new life and new civilizations, to boldly go where no man has gone before!</p>
</article>
<article>
<h2>Portland Leggings</h2>
<p>Here's how it is: Earth got used up, so we terraformed a whole new galaxy of Earths, some rich and flush with the new technologies, some not so much. Central Planets, them was formed the Alliance</p>
<p> Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut odio neque, dapibus a tincidunt sed, molestie in diam. Quisque quis vulputate tellus. Nulla nisl mi, rhoncus et magna cursus, euismod vehicula erat. Integer fringilla urna orci, at tempor nisi suscipit ut. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Donec non laoreet ex. Cras et purus augue. Donec a urna et leo malesuada laoreet. Duis tortor massa, fermentum et porta id, pharetra suscipit lorem. Donec molestie nunc nisi, sed faucibus turpis facilisis eget. Morbi eros mauris, fringilla in est a, vehicula tempus felis. Nullam sodales tincidunt turpis sed dapibus.</p>
<p> Proin efficitur, leo ac sagittis faucibus, elit purus consectetur dolor, et scelerisque orci neque a orci. Nullam ut congue libero, in ornare mi. Quisque mattis porttitor nulla non fermentum. Suspendisse euismod facilisis magna, eget interdum leo semper sed. Nullam pretium, nisl sit amet auctor rhoncus, velit ipsum ullamcorper turpis, nec feugiat mauris diam ac lorem. Cras hendrerit non eros id ultricies. Aenean sed felis purus. Sed commodo, enim sed aliquet egestas, nisl odio porta ante, ac euismod justo turpis in mauris. Ut lobortis augue ut ex scelerisque, ut lacinia libero sollicitudin. Pellentesque vestibulum ac tellus sit amet commodo. Phasellus eu nunc nibh. In porta metus sed pharetra aliquet. Etiam eu magna id erat accumsan pellentesque pulvinar eget erat.</p>
<p> Etiam vitae aliquam nisi. Aliquam vel suscipit felis. Donec non dapibus odio. Vivamus tincidunt mauris in tortor fermentum, a laoreet sem semper. Sed luctus vitae turpis vitae vulputate. Integer a libero orci. Morbi eu porttitor nisi, facilisis consectetur velit. Suspendisse sed facilisis velit. Proin rutrum ligula a purus mattis ullamcorper. Quisque sit amet aliquam enim. Etiam eleifend nibh velit, sit amet pulvinar est pulvinar eget. Fusce egestas ornare tellus sagittis pulvinar. Nulla aliquam magna id sem consectetur tristique. Nullam auctor vestibulum ex eget laoreet. Quisque interdum quam in nisi rhoncus rutrum. </p>
</article>
<article>
<h2>This section is shorter than the Readmore minimum</h2>
<p>Space, the final frontier. These are the voyages of the starship Enterprise. Its five year mission: to explore strange new worlds, to seek out new life and new civilizations, to boldly go where no man has gone before!</p>
</article>
<article>
<h2>Portland Leggings</h2>
<p>Here's how it is: Earth got used up, so we terraformed a whole new galaxy of Earths, some rich and flush with the new technologies, some not so much. Central Planets, them was formed the Alliance</p>
<p> Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut odio neque, dapibus a tincidunt sed, molestie in diam. Quisque quis vulputate tellus. Nulla nisl mi, rhoncus et magna cursus, euismod vehicula erat. Integer fringilla urna orci, at tempor nisi suscipit ut. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Donec non laoreet ex. Cras et purus augue. Donec a urna et leo malesuada laoreet. Duis tortor massa, fermentum et porta id, pharetra suscipit lorem. Donec molestie nunc nisi, sed faucibus turpis facilisis eget. Morbi eros mauris, fringilla in est a, vehicula tempus felis. Nullam sodales tincidunt turpis sed dapibus.</p>
<p> Proin efficitur, leo ac sagittis faucibus, elit purus consectetur dolor, et scelerisque orci neque a orci. Nullam ut congue libero, in ornare mi. Quisque mattis porttitor nulla non fermentum. Suspendisse euismod facilisis magna, eget interdum leo semper sed. Nullam pretium, nisl sit amet auctor rhoncus, velit ipsum ullamcorper turpis, nec feugiat mauris diam ac lorem. Cras hendrerit non eros id ultricies. Aenean sed felis purus. Sed commodo, enim sed aliquet egestas, nisl odio porta ante, ac euismod justo turpis in mauris. Ut lobortis augue ut ex scelerisque, ut lacinia libero sollicitudin. Pellentesque vestibulum ac tellus sit amet commodo. Phasellus eu nunc nibh. In porta metus sed pharetra aliquet. Etiam eu magna id erat accumsan pellentesque pulvinar eget erat.</p>
<p> Etiam vitae aliquam nisi. Aliquam vel suscipit felis. Donec non dapibus odio. Vivamus tincidunt mauris in tortor fermentum, a laoreet sem semper. Sed luctus vitae turpis vitae vulputate. Integer a libero orci. Morbi eu porttitor nisi, facilisis consectetur velit. Suspendisse sed facilisis velit. Proin rutrum ligula a purus mattis ullamcorper. Quisque sit amet aliquam enim. Etiam eleifend nibh velit, sit amet pulvinar est pulvinar eget. Fusce egestas ornare tellus sagittis pulvinar. Nulla aliquam magna id sem consectetur tristique. Nullam auctor vestibulum ex eget laoreet. Quisque interdum quam in nisi rhoncus rutrum. </p>
<p> Proin efficitur, leo ac sagittis faucibus, elit purus consectetur dolor, et scelerisque orci neque a orci. Nullam ut congue libero, in ornare mi. Quisque mattis porttitor nulla non fermentum. Suspendisse euismod facilisis magna, eget interdum leo semper sed. Nullam pretium, nisl sit amet auctor rhoncus, velit ipsum ullamcorper turpis, nec feugiat mauris diam ac lorem. Cras hendrerit non eros id ultricies. Aenean sed felis purus. Sed commodo, enim sed aliquet egestas, nisl odio porta ante, ac euismod justo turpis in mauris. Ut lobortis augue ut ex scelerisque, ut lacinia libero sollicitudin. Pellentesque vestibulum ac tellus sit amet commodo. Phasellus eu nunc nibh. In porta metus sed pharetra aliquet. Etiam eu magna id erat accumsan pellentesque pulvinar eget erat.</p>
<p> Etiam vitae aliquam nisi. Aliquam vel suscipit felis. Donec non dapibus odio. Vivamus tincidunt mauris in tortor fermentum, a laoreet sem semper. Sed luctus vitae turpis vitae vulputate. Integer a libero orci. Morbi eu porttitor nisi, facilisis consectetur velit. Suspendisse sed facilisis velit. Proin rutrum ligula a purus mattis ullamcorper. Quisque sit amet aliquam enim. Etiam eleifend nibh velit, sit amet pulvinar est pulvinar eget. Fusce egestas ornare tellus sagittis pulvinar. Nulla aliquam magna id sem consectetur tristique. Nullam auctor vestibulum ex eget laoreet. Quisque interdum quam in nisi rhoncus rutrum. </p>
</article>
</section>
</div>
编辑1 ：我向按钮添加了白色渐变，使其与您的示例类似。我忘了，对不起。
答案 1 :(得分：3)
将此添加到您的
<head>标签：
<script type="text/javascript">
function moreInformation(){
document.getElementById("more-information").style.display = "block";
}
function evenMoreInformation(){
document.getElementById("even-more-information").style.display = "block";
}
function lessInformation(){
document.getElementById("more-information").style.display = "none";
document.getElementById("even-more-information").style.display = "none";
}
</script>
并将其添加到
<body>标签：
This is some text and continues for ages...
<a onClick="moreInformation()" style="text-decoration:underline;cursor:pointer;">More information</a><br>
<br>
<div id="more-information" style="display:none">
This is some text and continues for ages...<br>
and it goes on and on and on...<br>
<a onClick="evenMoreInformation()" style="text-decoration:underline;cursor:pointer;">Even more information</a>
</div>
<br>
<div id="even-more-information" style="display:none">
This is some text and continues for ages...<br>
and it goes on and on and on...<br>
but not as long as you think.<br>
<a onClick="lessInformation()" style="text-decoration:underline;cursor:pointer;">Less information</a>
</div>
我希望了解你...
答案 2 :(得分：1)
创建一个函数，该函数具有用于this.$toaster.success('Your toaster success message.')
，collapsedHeight，moreLinkText和其他必要配置的参数；
lessLinkText首先使用您的初始要求（例如300，更多信息”）
现在，就像function invokeReadMore(collapsedHeight, moreTxt, lessTxt, ...) {
//and make your call to $('.example').readMore
//with all the args received
}
为beforeToggle添加一个函数（如果是定向扩展）并从那里以新的要求调用函数afterToggle（例如350， “甚至更多”，“更少..”），您还可以在下一个“甚至更多”视图中保留一些标志
现在，如果您的标志表明您处于“甚至更多”状态，则invokeReadMore（如果是定向崩溃）处于崩溃状态，则请再次使用函数afterToggle来调用参数
这里（我刚刚编辑了您的代码段的JS）是一个可行的示例
invokeReadMorevar isExpandMode = false;
function invokeReadMore(collapsedHeight, speed, moreLinkTxt, lessLinkTxt) {
$('.example').readmore({
collapsedHeight: collapsedHeight,
speed: speed,
embedCSS: false,
moreLink: '<a href="#">'+ moreLinkTxt +'</a>',
lessLink: '<a href="#">'+ lessLinkTxt +'</a>',
beforeToggle: function(trigger, element, expanded) {
if (expanded === false) {
element.addClass('remove-after');
} else {
element.removeClass('remove-after');
}
},
afterToggle: function(trigger, element, expanded) {
if (expanded === false) {
if(isExpandMode===true) {
invokeReadMore(200, 1, 'More Information', 'Less Information')
isExpandMode = false;
}
} else {
if(isExpandMode===false) {
invokeReadMore(300, 500, 'Even More Information', 'Less Information')
isExpandMode = true;
}
}
}
});
}
invokeReadMore(200, 1, 'More Information', 'Less Information');.example+[data-readmore-toggle],
.example[data-readmore] {
display: block;
}
.example[data-readmore]::after {
background: linear-gradient(to bottom, rgba(255, 255, 255, 0), rgba(255, 255, 255, 1) 85%);
bottom: 0;
content: '';
display: inline-block;
height: 250px;
position: absolute;
right: 0;
width: 100%;
}
.remove-after::after {
display: none !important;
}
[data-readmore-toggle] {
margin-left: 15px;
}
img {
float: right;
}
答案 3 :(得分：0)
只需在文本末尾添加
<br>标记即可。
答案 4 :(得分：0)
为什么不使用readmore.js来创建易于控制的自定义变量呢？我已经为您创建了一个自定义插件，它很棒，因为您可以在页面上的所有帖子中使用它，而无需为每个函数创建单独的事件。
这是完整的代码：
$(document).ready(function(){
$('div.post div.container').each(function(){
var Hval = $(this).height();
var Hval_P = $(this).parent().height();
if (Hval > Hval_P) {
$(this).parent().find('div#fade').css({'display':'block'});
$(this).parent().find('a#more').css({'display':'block'});
}
});
$('a#more').click(function(){
var Hval = $(this).parent().find('div.container').height();
var Hval_P = $(this).parent().height();
if (Hval > (Hval_P+500)) {
$(this).parent().css({'max-height':Hval_P+500});
var offset = $(this).offset().top - 150;
$([document.documentElement, document.body]).animate({
scrollTop: offset + 500
}, 250);
$(this).hide();
$(this).parent().find('a#evenmore').css({'display':'block'});
}else{
$(this).parent().css({'max-height':Hval-Hval_P});
$(this).hide();
$(this).parent().find('div#fade').css({'display':'none'});
$(this).parent().find('a#less').css({'display':'block'});
}
});
$('a#evenmore').click(function(){
var Hval = $(this).parent().find('div.container').height();
$(this).parent().css({'max-height':Hval});
var offset = $(this).offset().top - 150;
$([document.documentElement, document.body]).animate({
scrollTop: offset + 500
}, 250);
$(this).hide();
$(this).parent().find('div#fade').css({'display':'none'});
$(this).parent().find('a#less').css({'display':'block'});
});
$('a#less').click(function(){
$(this).parent().css({'max-height':'300px'});
var post_P = $(this).parent().offset().top;
$([document.documentElement, document.body]).animate({
scrollTop: post_P
}, 250);
$(this).hide();
$(this).parent().find('div#fade').css({'display':'block'});
$(this).parent().find('a#more').css({'display':'block'});
});
});.post{
width: 500px;
height: auto;
max-height: 300px; /*whatever you want*/
margin: auto;
margin-bottom: 20px;
padding: 5px 30px 20px 20px;
position: relative;
overflow: hidden;
border: 1px solid rgba(0,0,0,.1);
font-family: sans-serif;
transition: all 250ms linear 0ms;
}
.container{
width: 500px;
height: auto;
margin: auto;
padding: 0px;
position: relative;
overflow: hidden;
}
.post div#fade{
width: 100%;
height: 150px;
margin: auto;
padding: 0px;
position: absolute;
bottom: 0px;
background: linear-gradient(to bottom, rgba(255, 255, 255, 0), rgba(255, 255, 255, 1) 85%);
z-index: 1;
display: none;
}
.post a#more{
position: absolute;
bottom: 10px;
right: 20px;
text-decoration: none;
color: #4bbfee;
z-index: 2;
display: none;
}
.post a#less{
position: absolute;
bottom: 10px;
right: 20px;
text-decoration: none;
color: #4bbfee;
z-index: 2;
display: none;
}
.post a#evenmore{
position: absolute;
bottom: 10px;
right: 20px;
text-decoration: none;
color: #4bbfee;
z-index: 2;
display: none;
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<div class="post">
<div class="container">
<p>Look around, look at what we have. Beauty is everywhere, you only have to look to see it. That's the way I look when I get home late; black and blue. All you have to do is let your imagination go wild. We have a fantastic little sky!</p>
<p>All kinds of happy little splashes. We don't want to set these clouds on fire. I was blessed with a very steady hand; and it comes in very handy when you're doing these little delicate things. It looks so good, I might as well not stop. We need dark
in order to show light. I really recommend you use odorless thinner or your spouse is gonna run you right out into the yard and you'll be working by yourself.</p>
<img src="https://dummyimage.com/200x200/2d5cc2/fff" />
<p>Van Dyke Brown is a very nice brown, it's almost like a chocolate brown. We're trying to teach you a technique here and how to use it. This present moment is perfect simply due to the fact you're experiencing it.</p>
<p>If what you're doing doesn't make you happy - you're doing the wrong thing. We spend so much of our life looking - but never seeing. In this world, everything can be happy. Everyone is going to see things differently - and that's the way it should be.
And just raise cain.</p>
<p>There's nothing wrong with having a tree as a friend. Maybe there was an old trapper that lived out here and maybe one day he went to check his beaver traps, and maybe he fell into the river and drowned. Tree trunks grow however makes them happy.</p>
<p>Let your imagination be your guide. You could sit here for weeks with your one hair brush trying to do that - or you could do it with one stroke with an almighty brush. We wash our brush with odorless thinner. Every highlight needs it's own personal
shadow. Don't kill all your dark areas - you need them to show the light. Working it up and down, back and forth.</p>
<p>Don't forget to tell these special people in your life just how special they are to you. The only thing worse than yellow snow is green snow. That's why I paint - because I can create the kind of world I want - and I can make this world as happy as
I want it. Let's build an almighty mountain. You have to make almighty decisions when you're the creator.</p>
<p>We have a fantastic little sky! Everybody's different. Trees are different. Let them all be individuals. Just go out and talk to a tree. Make friends with it. Go out on a limb - that's where the fruit is. There are no mistakes. You can fix anything
that happens.</p>
<p>You have to make those little noises or it won't work. We have no limits to our world. We're only limited by our imagination. I want everbody to be happy. That's what it's all about.</p>
</div>
<div id="fade"></div>
<a href="#" id="more">More information</a>
<a href="#" id="less">Less information</a>
<a href="#" id="evenmore">Even more information</a>
</div>
答案 5 :(得分：0)
您可以像这样将文章相互嵌套：
Big article
|
| Original content
| |
| | Small article
| | |
| | | Original content
| | | | "blah blah blah"
| | | |
| | | Read more
| | | | "more blahs"
| | | |
| | | End
| | |
| | End
| |
| Read more
| | "even more blahs"
| |
| End
|
End
以下是一些关键点：
setTimeout()函数来延迟小文章的关闭