我需要在前两个函数中传递jQuery作为参数，否则initialiseSticky中的代码将无效。
它适用于document.ready但不适用于ajaxComplete，我的语法可能一点也不好......
jQuery(function($) {
console.log('document ready- sticky');
initialiseSticky($);
});
$(document).ajaxComplete(function ($) {
console.log('ajax complete- sticky');
initialiseSticky($);
}(jQuery));
function initialiseSticky($) {
//my code
}
在编辑之前，包含以下所有代码的函数如下所示：
!function ($) {
//my code (now initialiseSticky function)
}(jQuery)
编辑：我不知道这是否会有所帮助，但是这个问题的网站是：http://lesdeuxvagues.com/demo查看菜单及其粘性状态。到目前为止，它适用于正常的页面加载，但不适用于ajax。
编辑2： 这是代码的其余部分：
function initialiseSticky($) {
console.log('initialise- sticky');
/**
* Sticky module.
* @module foundation.sticky
* @requires foundation.util.triggers
* @requires foundation.util.mediaQuery
*/
class Sticky {
/**
* Creates a new instance of a sticky thing.
* @class
* @param {jQuery} element - jQuery object to make sticky.
* @param {Object} options - options object passed when creating the element programmatically.
*/
constructor(element, options) {
this.$element = element;
this.options = $.extend({}, Sticky.defaults, this.$element.data(), options);
this._init();
Foundation.registerPlugin(this, 'Sticky');
}
/**
* Initializes the sticky element by adding classes, getting/setting dimensions, breakpoints and attributes
* @function
* @private
*/
_init() {
var $parent = this.$element.parent('[data-sticky-container]'),
id = this.$element[0].id || Foundation.GetYoDigits(6, 'sticky'),
_this = this;
if (!$parent.length) {
this.wasWrapped = true;
}
this.$container = $parent.length ? $parent : $(this.options.container).wrapInner(this.$element);
this.$container.addClass(this.options.containerClass);
this.$element.addClass(this.options.stickyClass).attr({ 'data-resize': id, 'data-mutate': id });
if (this.options.anchor !== '') {
$('#' + _this.options.anchor).attr({ 'data-mutate': id });
}
this.scrollCount = this.options.checkEvery;
this.isStuck = false;
$(window).one('load.zf.sticky', function(){
//We calculate the container height to have correct values for anchor points offset calculation.
_this.containerHeight = _this.$element.css("display") == "none" ? 0 : _this.$element[0].getBoundingClientRect().height;
_this.$container.css('height', _this.containerHeight);
_this.elemHeight = _this.containerHeight;
if(_this.options.anchor !== ''){
_this.$anchor = $('#' + _this.options.anchor);
}else{
_this._parsePoints();
}
_this._setSizes(function(){
var scroll = window.pageYOffset;
_this._calc(false, scroll);
//Unstick the element will ensure that proper classes are set.
if (!_this.isStuck) {
_this._removeSticky((scroll >= _this.topPoint) ? false : true);
}
});
_this._events(id.split('-').reverse().join('-'));
});
}
/**
* If using multiple elements as anchors, calculates the top and bottom pixel values the sticky thing should stick and unstick on.
* @function
* @private
*/
_parsePoints() {
var top = this.options.topAnchor == "" ? 1 : this.options.topAnchor,
btm = this.options.btmAnchor== "" ? document.documentElement.scrollHeight : this.options.btmAnchor,
pts = [top, btm],
breaks = {};
for (var i = 0, len = pts.length; i < len && pts[i]; i++) {
var pt;
if (typeof pts[i] === 'number') {
pt = pts[i];
} else {
var place = pts[i].split(':'),
anchor = $(`#${place[0]}`);
pt = anchor.offset().top;
if (place[1] && place[1].toLowerCase() === 'bottom') {
pt += anchor[0].getBoundingClientRect().height;
}
}
breaks[i] = pt;
}
this.points = breaks;
return;
}
/**
* Adds event handlers for the scrolling element.
* @private
* @param {String} id - psuedo-random id for unique scroll event listener.
*/
_events(id) {
var _this = this,
scrollListener = this.scrollListener = `scroll.zf.${id}`;
if (this.isOn) { return; }
if (this.canStick) {
this.isOn = true;
$(window).off(scrollListener)
.on(scrollListener, function(e) {
if (_this.scrollCount === 0) {
_this.scrollCount = _this.options.checkEvery;
_this._setSizes(function() {
_this._calc(false, window.pageYOffset);
});
} else {
_this.scrollCount--;
_this._calc(false, window.pageYOffset);
}
});
}
this.$element.off('resizeme.zf.trigger')
.on('resizeme.zf.trigger', function(e, el) {
_this._eventsHandler(id);
});
this.$element.on('mutateme.zf.trigger', function (e, el) {
_this._eventsHandler(id);
});
if(this.$anchor) {
this.$anchor.on('mutateme.zf.trigger', function (e, el) {
_this._eventsHandler(id);
});
}
}
/**
* Handler for events.
* @private
* @param {String} id - psuedo-random id for unique scroll event listener.
*/
_eventsHandler(id) {
var _this = this,
scrollListener = this.scrollListener = `scroll.zf.${id}`;
_this._setSizes(function() {
_this._calc(false);
if (_this.canStick) {
if (!_this.isOn) {
_this._events(id);
}
} else if (_this.isOn) {
_this._pauseListeners(scrollListener);
}
});
}
/**
* Removes event handlers for scroll and change events on anchor.
* @fires Sticky#pause
* @param {String} scrollListener - unique, namespaced scroll listener attached to `window`
*/
_pauseListeners(scrollListener) {
this.isOn = false;
$(window).off(scrollListener);
/**
* Fires when the plugin is paused due to resize event shrinking the view.
* @event Sticky#pause
* @private
*/
this.$element.trigger('pause.zf.sticky');
}
/**
* Called on every `scroll` event and on `_init`
* fires functions based on booleans and cached values
* @param {Boolean} checkSizes - true if plugin should recalculate sizes and breakpoints.
* @param {Number} scroll - current scroll position passed from scroll event cb function. If not passed, defaults to `window.pageYOffset`.
*/
_calc(checkSizes, scroll) {
if (checkSizes) { this._setSizes(); }
if (!this.canStick) {
if (this.isStuck) {
this._removeSticky(true);
}
return false;
}
if (!scroll) { scroll = window.pageYOffset; }
if (scroll >= this.topPoint) {
if (scroll <= this.bottomPoint) {
if (!this.isStuck) {
this._setSticky();
}
} else {
if (this.isStuck) {
this._removeSticky(false);
}
}
} else {
if (this.isStuck) {
this._removeSticky(true);
}
}
}
/**
* Causes the $element to become stuck.
* Adds `position: fixed;`, and helper classes.
* @fires Sticky#stuckto
* @function
* @private
*/
_setSticky() {
var _this = this,
stickTo = this.options.stickTo,
mrgn = stickTo === 'top' ? 'marginTop' : 'marginBottom',
notStuckTo = stickTo === 'top' ? 'bottom' : 'top',
css = {};
css[mrgn] = `${this.options[mrgn]}em`;
css[stickTo] = 0;
css[notStuckTo] = 'auto';
this.isStuck = true;
this.$element.removeClass(`is-anchored is-at-${notStuckTo}`)
.addClass(`is-stuck is-at-${stickTo}`)
.css(css)
/**
* Fires when the $element has become `position: fixed;`
* Namespaced to `top` or `bottom`, e.g. `sticky.zf.stuckto:top`
* @event Sticky#stuckto
*/
.trigger(`sticky.zf.stuckto:${stickTo}`);
this.$element.on("transitionend webkitTransitionEnd oTransitionEnd otransitionend MSTransitionEnd", function() {
_this._setSizes();
});
}
/**
* Causes the $element to become unstuck.
* Removes `position: fixed;`, and helper classes.
* Adds other helper classes.
* @param {Boolean} isTop - tells the function if the $element should anchor to the top or bottom of its $anchor element.
* @fires Sticky#unstuckfrom
* @private
*/
_removeSticky(isTop) {
var stickTo = this.options.stickTo,
stickToTop = stickTo === 'top',
css = {},
anchorPt = (this.points ? this.points[1] - this.points[0] : this.anchorHeight) - this.elemHeight,
mrgn = stickToTop ? 'marginTop' : 'marginBottom',
notStuckTo = stickToTop ? 'bottom' : 'top',
topOrBottom = isTop ? 'top' : 'bottom';
css[mrgn] = 0;
css['bottom'] = 'auto';
if(isTop) {
css['top'] = 0;
} else {
css['top'] = anchorPt;
}
this.isStuck = false;
this.$element.removeClass(`is-stuck is-at-${stickTo}`)
.addClass(`is-anchored is-at-${topOrBottom}`)
.css(css)
/**
* Fires when the $element has become anchored.
* Namespaced to `top` or `bottom`, e.g. `sticky.zf.unstuckfrom:bottom`
* @event Sticky#unstuckfrom
*/
.trigger(`sticky.zf.unstuckfrom:${topOrBottom}`);
}
/**
* Sets the $element and $container sizes for plugin.
* Calls `_setBreakPoints`.
* @param {Function} cb - optional callback function to fire on completion of `_setBreakPoints`.
* @private
*/
_setSizes(cb) {
this.canStick = Foundation.MediaQuery.is(this.options.stickyOn);
if (!this.canStick) {
if (cb && typeof cb === 'function') { cb(); }
}
var _this = this,
newElemWidth = this.$container[0].getBoundingClientRect().width,
comp = window.getComputedStyle(this.$container[0]),
pdngl = parseInt(comp['padding-left'], 10),
pdngr = parseInt(comp['padding-right'], 10);
if (this.$anchor && this.$anchor.length) {
this.anchorHeight = this.$anchor[0].getBoundingClientRect().height;
} else {
this._parsePoints();
}
this.$element.css({
'max-width': `${newElemWidth - pdngl - pdngr}px`
});
var newContainerHeight = this.$element[0].getBoundingClientRect().height || this.containerHeight;
if (this.$element.css("display") == "none") {
newContainerHeight = 0;
}
this.containerHeight = newContainerHeight;
this.$container.css({
height: newContainerHeight
});
this.elemHeight = newContainerHeight;
if (!this.isStuck) {
if (this.$element.hasClass('is-at-bottom')) {
var anchorPt = (this.points ? this.points[1] - this.$container.offset().top : this.anchorHeight) - this.elemHeight;
this.$element.css('top', anchorPt);
}
}
this._setBreakPoints(newContainerHeight, function() {
if (cb && typeof cb === 'function') { cb(); }
});
}
/**
* Sets the upper and lower breakpoints for the element to become sticky/unsticky.
* @param {Number} elemHeight - px value for sticky.$element height, calculated by `_setSizes`.
* @param {Function} cb - optional callback function to be called on completion.
* @private
*/
_setBreakPoints(elemHeight, cb) {
if (!this.canStick) {
if (cb && typeof cb === 'function') { cb(); }
else { return false; }
}
var mTop = emCalc(this.options.marginTop),
mBtm = emCalc(this.options.marginBottom),
topPoint = this.points ? this.points[0] : this.$anchor.offset().top,
bottomPoint = this.points ? this.points[1] : topPoint + this.anchorHeight,
// topPoint = this.$anchor.offset().top || this.points[0],
// bottomPoint = topPoint + this.anchorHeight || this.points[1],
winHeight = window.innerHeight;
if (this.options.stickTo === 'top') {
topPoint -= mTop;
bottomPoint -= (elemHeight + mTop);
} else if (this.options.stickTo === 'bottom') {
topPoint -= (winHeight - (elemHeight + mBtm));
bottomPoint -= (winHeight - mBtm);
} else {
//this would be the stickTo: both option... tricky
}
this.topPoint = topPoint;
this.bottomPoint = bottomPoint;
if (cb && typeof cb === 'function') { cb(); }
}
/**
* Destroys the current sticky element.
* Resets the element to the top position first.
* Removes event listeners, JS-added css properties and classes, and unwraps the $element if the JS added the $container.
* @function
*/
destroy() {
this._removeSticky(true);
this.$element.removeClass(`${this.options.stickyClass} is-anchored is-at-top`)
.css({
height: '',
top: '',
bottom: '',
'max-width': ''
})
.off('resizeme.zf.trigger')
.off('mutateme.zf.trigger');
if (this.$anchor && this.$anchor.length) {
this.$anchor.off('change.zf.sticky');
}
$(window).off(this.scrollListener);
if (this.wasWrapped) {
this.$element.unwrap();
} else {
this.$container.removeClass(this.options.containerClass)
.css({
height: ''
});
}
Foundation.unregisterPlugin(this);
}
}
Sticky.defaults = {
/**
* Customizable container template. Add your own classes for styling and sizing.
* @option
* @type {string}
* @default '<div data-sticky-container></div>'
*/
container: '<div data-sticky-container></div>',
/**
* Location in the view the element sticks to. Can be `'top'` or `'bottom'`.
* @option
* @type {string}
* @default 'top'
*/
stickTo: 'top',
/**
* If anchored to a single element, the id of that element.
* @option
* @type {string}
* @default ''
*/
anchor: '',
/**
* If using more than one element as anchor points, the id of the top anchor.
* @option
* @type {string}
* @default ''
*/
topAnchor: '',
/**
* If using more than one element as anchor points, the id of the bottom anchor.
* @option
* @type {string}
* @default ''
*/
btmAnchor: '',
/**
* Margin, in `em`'s to apply to the top of the element when it becomes sticky.
* @option
* @type {number}
* @default 1
*/
marginTop: 1,
/**
* Margin, in `em`'s to apply to the bottom of the element when it becomes sticky.
* @option
* @type {number}
* @default 1
*/
marginBottom: 1,
/**
* Breakpoint string that is the minimum screen size an element should become sticky.
* @option
* @type {string}
* @default 'medium'
*/
stickyOn: 'medium',
/**
* Class applied to sticky element, and removed on destruction. Foundation defaults to `sticky`.
* @option
* @type {string}
* @default 'sticky'
*/
stickyClass: 'sticky',
/**
* Class applied to sticky container. Foundation defaults to `sticky-container`.
* @option
* @type {string}
* @default 'sticky-container'
*/
containerClass: 'sticky-container',
/**
* Number of scroll events between the plugin's recalculating sticky points. Setting it to `0` will cause it to recalc every scroll event, setting it to `-1` will prevent recalc on scroll.
* @option
* @type {number}
* @default -1
*/
checkEvery: -1
};
/**
* Helper function to calculate em values
* @param Number {em} - number of em's to calculate into pixels
*/
function emCalc(em) {
return parseInt(window.getComputedStyle(document.body, null).fontSize, 10) * em;
}
// Window exports
Foundation.plugin(Sticky, 'Sticky');
}
答案 0 :(得分：1)
Javascript实施Closures，因此任何 var $container = jQuery('.masonry-grid');
$container.imagesLoaded(function() {
$container.masonry({
columnWidth: 225,
gutter: 10,
itemSelector: '.dev-grid-item'
});
$container.imagesLoaded().done( function( instance ) {
$container.masonry('layout');
});
});
都可以访问父作用域。
inner function现在，因为您的var foo = 'bar';
function baz() {
console.log(foo); // => baz
}
是全局范围的内部函数 initialiseSticky ，Window也属于此范围作为jQuery，您不需要将jQuery引用传递给window.jQuery，因为它已经能够访问它。
请注意，initialiseSticky只是$的别名。
答案 1 :(得分：1)
你的整个代码很乱。我会试着把它剥掉。
$(function() {
console.log('document ready- sticky');
initialiseSticky($);
});
$(document).ajaxComplete(function () {
console.log('ajax complete- sticky');
initialiseSticky($);
});
function initialiseSticky($) {
//my code
}
尝试这是否有效。注意：我不确定是否需要传递$。