我正在尝试制作一个网页，其中包含两组不同的文本（文本A和文本B），它们的长度不同，并且不是由A / B按顺序排列的（即文本B之前和之后有文本A）
在顶部，有三个按钮：Show All，Text A和Text B。
点击Show All后，会显示所有文字，点击Text A时，只显示文字A文字，隐藏文字B文字等。
我想动画文本的变化（使用淡入淡出的动画） 这样做有简单的方法吗？
function select(name) {
var navbar = document.getElementById("navbar");
var elems = navbar.getElementsByTagName("li");
var classes = [];
for (x = 0; x < elems.length; x++) {
var obj = elems[x].getElementsByTagName("a")[0];
obj.className = elems[x].id !== name ? "nav" : "navsel";
classes[x] = elems[x].id;
}
for (n = 0; n < classes.length; n++) {
var allelems = document.getElementsByClassName(classes[n]);
for (x = 0; x < allelems.length; x++) {
var s = allelems[x].className;
if (s.search(name) >= 0 || name === "all") {
s = s.replace(" hide", "");
} else if (s.search("hide") < 0) {
s += " hide";
}
allelems[x].className = s;
}
}
}ul.nav {
list-style-type: none;
margin: 0;
padding: 0;
position: fixed;
top: 0px;
left: 0px;
background: #ffffff;
width: 100%;
height: 30px;
text-align: center;
vertical-align: middle;
}
li.nav {
float: left;
width: 33.3333%;
height: 100%;
display: table;
}
a.nav,
a:visited.nav {
display: table-cell;
font-weight: bold;
color: #ffffff;
background-color: #800000;
padding: 4px;
text-decoration: none;
vertical-align: middle;
}
a.navsel,
a:visited.navsel {
display: table-cell;
font-weight: bold;
color: #ffffff;
background-color: #C00000;
padding: 4px;
text-decoration: none;
vertical-align: middle;
}
a:hover.nav,
a:active.nav {
background-color: #A00000;
color: #ffffff;
}
a:hover.navsel,
a:active.navsel {
color: #ffffff;
}
.hide {
display: none;
}<ul class="nav" id="navbar">
<li class="nav" id="all">
<a class="navsel" onclick="select('all');">Show All</a>
</li>
<li class="nav" id="texta">
<a class="nav" onclick="select('texta');">Text A</a>
</li>
<li class="nav" id="textb">
<a class="nav" onclick="select('textb');">Text B</a>
</li>
</ul>
<br />
<br />
<h1>Test</h1>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</p>
<h2 class="texta">Text A</h2>
<p class="texta">We the people of the United States, in order to form a more perfect union, establish justice, insure domestic tranquility, provide for the common defense, promote the general welfare, and secure the blessings of liberty to ourselves and our posterity,
do ordain and establish this Constitution for the United States of America.</p>
<h2 class="textb">Text B</h2>
<p class="textb">
We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the pursuit of Happiness.
<br />That to secure these rights, Governments are instituted among Men, deriving their just powers from the consent of the governed,
<br />That whenever any Form of Government becomes destructive of these ends, it is the Right of the People to alter or to abolish it, and to institute new Government, laying its foundation on such principles and organizing its powers in such form, as to
them shall seem most likely to effect their Safety and Happiness. Prudence, indeed, will dictate that Governments long established should not be changed for light and transient causes; and accordingly all experience hath shewn, that mankind are more
disposed to suffer, while evils are sufferable, than to right themselves by abolishing the forms to which they are accustomed. But when a long train of abuses and usurpations, pursuing invariably the same Object evinces a design to reduce them under
absolute Despotism, it is their right, it is their duty, to throw off such Government, and to provide new Guards for their future security.
<br />Such has been the patient sufferance of these Colonies; and such is now the necessity which constrains them to alter their former Systems of Government. The history of the present King of Great Britain is a history of repeated injuries and usurpations,
all having in direct object the establishment of an absolute Tyranny over these States.
</p>
<h1>More Text</h1>
<h2 class="texta">Text A</h2>
<p class="texta">Don't cry because it's over, smile because it happened.</p>
<h2 class="textb">Text B</h2>
<p class="textb">Live as if you were to die tomorrow. Learn as if you were to live forever.</p>
答案 0 :(得分：1)
我刚刚为您写了一个快速脚本，希望它会对您有所帮助。
.content {
opacity: 0;
transition: opacity .75s ease-in-out;
}
.show {
opacity: 1;
transition: opacity .75s ease-in-out;
}<button class="article-a" onclick="document.getElementById('contentA').className = 'show';">Text A</button>
<button class="article-b" onclick="document.getElementById('contentB').className = 'show';">Text B</button>
<button class="article-all" onclick="document.getElementById('contentA').className = 'show';document.getElementById('contentB').className = 'show';">All Text</button>
<div id="contentA" class="content">First part</div>
<div id="contentB" class="content">Second Part</div>
我认为最好使用opacity进行转换，在将不透明度设置为1后，您可以隐藏该元素。
答案 1 :(得分：0)
这是一个简单的解决方案，不需要任何图书馆，如Jquery。
使用setTimeout我们只有在淡出时才能为该元素提供display:none样式。
<html>
<head>
<title>MCVE</title>
<style type="text/css">
ul.nav {
list-style-type:none;
margin:0;
padding:0;
position:fixed;
top:0px;
left:0px;
background:#ffffff;
width:100%;
height:30px;
text-align:center;
vertical-align:middle;
}
li.nav {
float:left;
width:33.3333%;
height:100%;
display:table;
cursor:pointer;
}
a.nav, a:visited.nav {
display:table-cell;
font-weight:bold;
color:#ffffff;
background-color:#800000;
padding:4px;
text-decoration:none;
vertical-align:middle;
}
a.navsel, a:visited.navsel {
display:table-cell;
font-weight:bold;
color:#ffffff;
background-color:#C00000;
padding:4px;
text-decoration:none;
vertical-align:middle;
}
a:hover.nav, a:active.nav {
background-color:#A00000;
color:#ffffff;
}
a:hover.navsel, a:active.navsel {
color:#ffffff;
}
.hide {
opacity:0;
}
.noDisplay{
display:none;
}
p, h2{
transition:
opacity 1s ease
}
.show{
animation-name: fadeIn;
animation-duration: 2s;
animation-fill-mode: forwards;
}
@keyframes fadeIn {
0% {
opacity:0;
}
100% {
opacity:1;
}
}
</style>
<script>
function select( element ){
if( element.parentElement.id == 'texta' ){
document.getElementById( 'all' ).childNodes[ 1 ].classList.remove( 'navsel' );
document.getElementById( 'all' ).childNodes[ 1 ].classList.add( 'nav' );
document.getElementById( 'textb' ).childNodes[ 1 ].classList.remove( 'navsel' );
document.getElementById( 'textb' ).childNodes[ 1 ].classList.add( 'nav' );
document.getElementById( 'texta' ).childNodes[ 1 ].classList.add( 'navsel' );
element.classList.add( 'navsel' );
var everyElement = document.getElementsByClassName( 'textb' );
for( var i = 0; i < everyElement.length; i++ ){
everyElement[ i ].classList.add( 'hide' );
}
removeElement = setTimeout( removeNowA, 900 );
}
else if( element.parentElement.id == 'textb' ){
document.getElementById( 'all' ).childNodes[ 1 ].classList.remove( 'navsel' );
document.getElementById( 'all' ).childNodes[ 1 ].classList.add( 'nav' );
document.getElementById( 'texta' ).childNodes[ 1 ].classList.remove( 'navsel' );
document.getElementById( 'texta' ).childNodes[ 1 ].classList.add( 'nav' );
document.getElementById( 'textb' ).childNodes[ 1 ].classList.add( 'navsel' );
var everyElement = document.getElementsByClassName( 'texta' );
for( var i = 0; i < everyElement.length; i++ ){
everyElement[ i ].classList.add( 'hide' );
}
removeElement = setTimeout( removeNowB, 900 );
}
else if( element.parentElement.id == 'all' ){
document.getElementById( 'texta' ).childNodes[ 1 ].classList.remove( 'navsel' );
document.getElementById( 'texta' ).childNodes[ 1 ].classList.add( 'nav' );
document.getElementById( 'textb' ).childNodes[ 1 ].classList.remove( 'navsel' );
document.getElementById( 'textb' ).childNodes[ 1 ].classList.add( 'nav' );
document.getElementById( 'all' ).childNodes[ 1 ].classList.add( 'navsel' );
var everyElement = document.getElementsByClassName( 'textb' );
for( var i = 0; i < everyElement.length; i++ ){
everyElement[ i ].classList.remove( 'noDisplay' );
}
var everyElement = document.getElementsByClassName( 'texta' );
for( var i = 0; i < everyElement.length; i++ ){
everyElement[ i ].classList.remove( 'noDisplay' );
}
fadeIn();
}
}
function removeNowA(){
var everyElement = document.getElementsByClassName( 'textb' );
for( var i = 0; i < everyElement.length; i++ ){
everyElement[ i ].classList.add( 'noDisplay' );
}
}
function removeNowB(){
var everyElement = document.getElementsByClassName( 'texta' );
for( var i = 0; i < everyElement.length; i++ ){
everyElement[ i ].classList.add( 'noDisplay' );
}
}
function fadeIn(){
var everyElement = document.getElementsByClassName( 'textb' );
for( var i = 0; i < everyElement.length; i++ ){
everyElement[ i ].classList.add( 'show' );
}
var everyElement = document.getElementsByClassName( 'texta' );
for( var i = 0; i < everyElement.length; i++ ){
everyElement[ i ].classList.add( 'show' );
}
}
</script>
</head>
<body>
<ul class="nav" id="navbar">
<li class="nav" id="all">
<a class="navsel" onclick="select( this );">Show All</a>
</li>
<li class="nav" id="texta">
<a class="nav" onclick="select( this );">Text A</a>
</li>
<li class="nav" id="textb">
<a class="nav" onclick="select( this );">Text B</a>
</li>
</ul>
<br /><br />
<h1>Test</h1>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</p>
<h2 class="texta">Text A</h2>
<p class="texta">We the people of the United States, in order to form a more perfect union, establish justice, insure domestic tranquility, provide for the common defense, promote the general welfare, and secure the blessings of liberty to ourselves and our posterity, do ordain and establish this Constitution for the United States of America.</p>
<h2 class="textb">Text B</h2>
<p class="textb">
We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the pursuit of Happiness.
<br />That to secure these rights, Governments are instituted among Men, deriving their just powers from the consent of the governed,
<br />That whenever any Form of Government becomes destructive of these ends, it is the Right of the People to alter or to abolish it, and to institute new Government, laying its foundation on such principles and organizing its powers in such form, as to them shall seem most likely to effect their Safety and Happiness. Prudence, indeed, will dictate that Governments long established should not be changed for light and transient causes; and accordingly all experience hath shewn, that mankind are more disposed to suffer, while evils are sufferable, than to right themselves by abolishing the forms to which they are accustomed. But when a long train of abuses and usurpations, pursuing invariably the same Object evinces a design to reduce them under absolute Despotism, it is their right, it is their duty, to throw off such Government, and to provide new Guards for their future security.
<br />Such has been the patient sufferance of these Colonies; and such is now the necessity which constrains them to alter their former Systems of Government. The history of the present King of Great Britain is a history of repeated injuries and usurpations, all having in direct object the establishment of an absolute Tyranny over these States.
</p>
<h1>More Text</h1>
<h2 class="texta">Text A</h2>
<p class="texta">Don't cry because it's over, smile because it happened.</p>
<h2 class="textb">Text B</h2>
<p class="textb">Live as if you were to die tomorrow. Learn as if you were to live forever.</p>
</body>
</html>
答案 2 :(得分：0)
就个人而言，我会通过在点击时将fadein和fadeout JQuery方法附加到每个文本类来处理这个问题。你可以通过在一个简单的Javascript中定义它们来实现这一点，这个Javascript会淡入一个类而另一个类消失，反之亦然
$("#texta").click(function(){
//Show texta and hide textb
$("#texta").fadeIn("slow");
$("#textb").fadeOut("slow");
});
$("#textb").click(function(){
//Show textb and hide texta
$("#textb").fadeIn("slow");
$("#texta").fadeOut("slow");
});
$("#all").click(function(){
//Show texta and hide textb
$("#texta").fadeIn("slow");
$("#textb").fadeIn("slow");
});