X-Git-Url: http://git.asbjorn.biz/?a=blobdiff_plain;f=src%2Fevent%2Fevent.js;h=205b510a13936d75c68a8c10a308bcee0d35a7f9;hb=13b66c8ba9618242df2c1cc352a2b1d879c36188;hp=52416e0fad67a14aa94b8b1d3a63632c0484d28a;hpb=e290083c35654f6ef300970d55d680d24c35782b;p=jquery.git diff --git a/src/event/event.js b/src/event/event.js index 52416e0..205b510 100644 --- a/src/event/event.js +++ b/src/event/event.js @@ -12,14 +12,14 @@ jQuery.event = { // around, causing it to be cloned in the process if ( jQuery.browser.msie && element.setInterval != undefined ) element = window; - + // Make sure that the function being executed has a unique ID if ( !handler.guid ) handler.guid = this.guid++; // if data is passed, bind to handler if( data != undefined ) { - // Create temporary function pointer to original handler + // Create temporary function pointer to original handler var fn = handler; // Create unique handler function, wrapped around original handler @@ -35,6 +35,11 @@ jQuery.event = { handler.guid = fn.guid; } + // Namespaced event handlers + var parts = type.split("."); + type = parts[0]; + handler.type = parts[1]; + // Init the element's event structure if (!element.$events) element.$events = {}; @@ -64,19 +69,15 @@ jQuery.event = { // And bind the global event handler to the element if (element.addEventListener) element.addEventListener(type, element.$handle, false); - else if (element.attachEvent) + else element.attachEvent("on" + type, element.$handle); } // Add the function to the element's handler list handlers[handler.guid] = handler; - // Remember the function in a global list (for triggering) - if (!this.global[type]) - this.global[type] = []; - // Only add the element to the global list once - if (jQuery.inArray(element, this.global[type]) == -1) - this.global[type].push( element ); + // Keep track of which events have been used, for global triggering + this.global[type] = true; }, guid: 1, @@ -86,6 +87,12 @@ jQuery.event = { remove: function(element, type, handler) { var events = element.$events, ret, index; + // Namespaced event handlers + if ( typeof type == "string" ) { + var parts = type.split("."); + type = parts[0]; + } + if ( events ) { // type is actually an event object here if ( type && type.type ) { @@ -105,21 +112,19 @@ jQuery.event = { // remove all handlers for the given type else for ( handler in element.$events[type] ) - delete events[type][handler]; + // Handle the removal of namespaced events + if ( !parts[1] || events[type][handler].type == parts[1] ) + delete events[type][handler]; // remove generic event handler if no more handlers exist for ( ret in events[type] ) break; if ( !ret ) { if (element.removeEventListener) element.removeEventListener(type, element.$handle, false); - else if (element.detachEvent) + else element.detachEvent("on" + type, element.$handle); ret = null; delete events[type]; - - // Remove element from the global event type cache - while ( this.global[type] && ( (index = jQuery.inArray(element, this.global[type])) >= 0 ) ) - delete this.global[type][index]; } } @@ -130,32 +135,52 @@ jQuery.event = { } }, - trigger: function(type, data, element) { + trigger: function(type, data, element, donative, extra) { // Clone the incoming data, if any data = jQuery.makeArray(data || []); // Handle a global trigger - if ( !element ) - jQuery.each( this.global[type] || [], function(){ - jQuery.event.trigger( type, data, this ); - }); + if ( !element ) { + // Only trigger if we've ever bound an event for it + if ( this.global[type] ) + jQuery("*").add([window, document]).trigger(type, data); // Handle triggering a single element - else { - var val, ret, fn = jQuery.isFunction( element[ type ] || null ); + } else { + var val, ret, fn = jQuery.isFunction( element[ type ] || null ), + // Check to see if we need to provide a fake event, or not + evt = !data[0] || !data[0].preventDefault; // Pass along a fake event - data.unshift( this.fix({ type: type, target: element }) ); + if ( evt ) + data.unshift( this.fix({ type: type, target: element }) ); // Trigger the event - if ( jQuery.isFunction(element.$handle) && (val = element.$handle.apply( element, data )) !== false ) - this.triggered = true; + if ( jQuery.isFunction( element.$handle ) ) + val = element.$handle.apply( element, data ); + + // Handle triggering native .onfoo handlers + if ( !fn && element["on"+type] && element["on"+type].apply( element, data ) === false ) + val = false; + + // Extra functions don't get the custom event object + if ( evt ) + data.shift(); + + // Handle triggering of extra function + if ( extra && extra.apply( element, data ) === false ) + val = false; - if ( fn && val !== false && !jQuery.nodeName(element, 'a') ) + // Trigger the native events (except for clicks on links) + if ( fn && donative !== false && val !== false && !(jQuery.nodeName(element, 'a') && type == "click") ) { + this.triggered = true; element[ type ](); + } this.triggered = false; } + + return val; }, handle: function(event) { @@ -165,7 +190,11 @@ jQuery.event = { // Empty object is for triggered events with no data event = jQuery.event.fix( event || window.event || {} ); - var c = this.$events && this.$events[event.type], args = [].slice.call( arguments, 1 ); + // Namespaced event handlers + var parts = event.type.split("."); + event.type = parts[0]; + + var c = this.$events && this.$events[event.type], args = Array.prototype.slice.call( arguments, 1 ); args.unshift( event ); for ( var j in c ) { @@ -174,10 +203,17 @@ jQuery.event = { args[0].handler = c[j]; args[0].data = c[j].data; - if ( c[j].apply( this, args ) === false ) { - event.preventDefault(); - event.stopPropagation(); - val = false; + // Filter the functions by class + if ( !parts[1] || c[j].type == parts[1] ) { + var tmp = c[j].apply( this, args ); + + if ( val !== false ) + val = tmp; + + if ( tmp === false ) { + event.preventDefault(); + event.stopPropagation(); + } } } @@ -200,14 +236,14 @@ jQuery.event = { event.preventDefault = function() { // if preventDefault exists run it on the original event if (originalEvent.preventDefault) - return originalEvent.preventDefault(); + originalEvent.preventDefault(); // otherwise set the returnValue property of the original event to false (IE) originalEvent.returnValue = false; }; event.stopPropagation = function() { // if stopPropagation exists run it on the original event if (originalEvent.stopPropagation) - return originalEvent.stopPropagation(); + originalEvent.stopPropagation(); // otherwise set the cancelBubble property of the original event to true (IE) originalEvent.cancelBubble = true; }; @@ -227,8 +263,8 @@ jQuery.event = { // Calculate pageX/Y if missing and clientX/Y available if ( event.pageX == null && event.clientX != null ) { var e = document.documentElement, b = document.body; - event.pageX = event.clientX + (e && e.scrollLeft || b && b.scrollLeft); - event.pageY = event.clientY + (e && e.scrollTop || b && b.scrollTop); + event.pageX = event.clientX + (e && e.scrollLeft || b.scrollLeft || 0); + event.pageY = event.clientY + (e && e.scrollTop || b.scrollTop || 0); } // Add which for key events @@ -249,88 +285,12 @@ jQuery.event = { }; jQuery.fn.extend({ - - /** - * Binds a handler to a particular event (like click) for each matched element. - * The event handler is passed an event object that you can use to prevent - * default behaviour. To stop both default action and event bubbling, your handler - * has to return false. - * - * In most cases, you can define your event handlers as anonymous functions - * (see first example). In cases where that is not possible, you can pass additional - * data as the second parameter (and the handler function as the third), see - * second example. - * - * Calling bind with an event type of "unload" will automatically - * use the one method instead of bind to prevent memory leaks. - * - * @example $("p").bind("click", function(){ - * alert( $(this).text() ); - * }); - * @before

Hello

- * @result alert("Hello") - * - * @example function handler(event) { - * alert(event.data.foo); - * } - * $("p").bind("click", {foo: "bar"}, handler) - * @result alert("bar") - * @desc Pass some additional data to the event handler. - * - * @example $("form").bind("submit", function() { return false; }) - * @desc Cancel a default action and prevent it from bubbling by returning false - * from your function. - * - * @example $("form").bind("submit", function(event){ - * event.preventDefault(); - * }); - * @desc Cancel only the default action by using the preventDefault method. - * - * - * @example $("form").bind("submit", function(event){ - * event.stopPropagation(); - * }); - * @desc Stop only an event from bubbling by using the stopPropagation method. - * - * @name bind - * @type jQuery - * @param String type An event type - * @param Object data (optional) Additional data passed to the event handler as event.data - * @param Function fn A function to bind to the event on each of the set of matched elements - * @cat Events - */ bind: function( type, data, fn ) { return type == "unload" ? this.one(type, data, fn) : this.each(function(){ jQuery.event.add( this, type, fn || data, fn && data ); }); }, - /** - * Binds a handler to a particular event (like click) for each matched element. - * The handler is executed only once for each element. Otherwise, the same rules - * as described in bind() apply. - * The event handler is passed an event object that you can use to prevent - * default behaviour. To stop both default action and event bubbling, your handler - * has to return false. - * - * In most cases, you can define your event handlers as anonymous functions - * (see first example). In cases where that is not possible, you can pass additional - * data as the second paramter (and the handler function as the third), see - * second example. - * - * @example $("p").one("click", function(){ - * alert( $(this).text() ); - * }); - * @before

Hello

- * @result alert("Hello") - * - * @name one - * @type jQuery - * @param String type An event type - * @param Object data (optional) Additional data passed to the event handler as event.data - * @param Function fn A function to bind to the event on each of the set of matched elements - * @cat Events - */ one: function( type, data, fn ) { return this.each(function(){ jQuery.event.add( this, type, function(event) { @@ -340,99 +300,23 @@ jQuery.fn.extend({ }); }, - /** - * The opposite of bind, removes a bound event from each of the matched - * elements. - * - * Without any arguments, all bound events are removed. - * - * If the type is provided, all bound events of that type are removed. - * - * If the function that was passed to bind is provided as the second argument, - * only that specific event handler is removed. - * - * @example $("p").unbind() - * @before

Hello

- * @result [

Hello

] - * - * @example $("p").unbind( "click" ) - * @before

Hello

- * @result [

Hello

] - * - * @example $("p").unbind( "click", function() { alert("Hello"); } ) - * @before

Hello

- * @result [

Hello

] - * - * @name unbind - * @type jQuery - * @param String type (optional) An event type - * @param Function fn (optional) A function to unbind from the event on each of the set of matched elements - * @cat Events - */ unbind: function( type, fn ) { return this.each(function(){ jQuery.event.remove( this, type, fn ); }); }, - /** - * Trigger a type of event on every matched element. This will also cause - * the default action of the browser with the same name (if one exists) - * to be executed. For example, passing 'submit' to the trigger() - * function will also cause the browser to submit the form. This - * default action can be prevented by returning false from one of - * the functions bound to the event. - * - * You can also trigger custom events registered with bind. - * - * @example $("p").trigger("click") - * @before

Hello

- * @result alert('hello') - * - * @example $("p").click(function(event, a, b) { - * // when a normal click fires, a and b are undefined - * // for a trigger like below a refers too "foo" and b refers to "bar" - * }).trigger("click", ["foo", "bar"]); - * @desc Example of how to pass arbitrary data to an event - * - * @example $("p").bind("myEvent",function(event,message1,message2) { - * alert(message1 + ' ' + message2); - * }); - * $("p").trigger("myEvent",["Hello","World"]); - * @result alert('Hello World') // One for each paragraph - * - * @name trigger - * @type jQuery - * @param String type An event type to trigger. - * @param Array data (optional) Additional data to pass as arguments (after the event object) to the event handler - * @cat Events - */ - trigger: function( type, data ) { + trigger: function( type, data, fn ) { return this.each(function(){ - jQuery.event.trigger( type, data, this ); + jQuery.event.trigger( type, data, this, true, fn ); }); }, - /** - * Toggle between two function calls every other click. - * Whenever a matched element is clicked, the first specified function - * is fired, when clicked again, the second is fired. All subsequent - * clicks continue to rotate through the two functions. - * - * Use unbind("click") to remove. - * - * @example $("p").toggle(function(){ - * $(this).addClass("selected"); - * },function(){ - * $(this).removeClass("selected"); - * }); - * - * @name toggle - * @type jQuery - * @param Function even The function to execute on every even click. - * @param Function odd The function to execute on every odd click. - * @cat Events - */ + triggerHandler: function( type, data, fn ) { + if ( this[0] ) + return jQuery.event.trigger( type, data, this[0], false, fn ); + }, + toggle: function() { // Save reference to arguments for access in closure var a = arguments; @@ -448,32 +332,7 @@ jQuery.fn.extend({ return a[this.lastToggle].apply( this, [e] ) || false; }); }, - - /** - * A method for simulating hovering (moving the mouse on, and off, - * an object). This is a custom method which provides an 'in' to a - * frequent task. - * - * Whenever the mouse cursor is moved over a matched - * element, the first specified function is fired. Whenever the mouse - * moves off of the element, the second specified function fires. - * Additionally, checks are in place to see if the mouse is still within - * the specified element itself (for example, an image inside of a div), - * and if it is, it will continue to 'hover', and not move out - * (a common error in using a mouseout event handler). - * - * @example $("p").hover(function(){ - * $(this).addClass("hover"); - * },function(){ - * $(this).removeClass("hover"); - * }); - * - * @name hover - * @type jQuery - * @param Function over The function to fire whenever the mouse is moved over a matched element. - * @param Function out The function to fire whenever the mouse is moved off of a matched element. - * @cat Events - */ + hover: function(f,g) { // A private function for handling mouse 'hovering' @@ -482,7 +341,7 @@ jQuery.fn.extend({ var p = e.relatedTarget; // Traverse up the tree - while ( p && p != this ) try { p = p.parentNode } catch(e) { p = this; }; + while ( p && p != this ) try { p = p.parentNode; } catch(e) { p = this; }; // If we actually just moused on to a sub-element, ignore it if ( p == this ) return false; @@ -495,54 +354,19 @@ jQuery.fn.extend({ return this.mouseover(handleHover).mouseout(handleHover); }, - /** - * Bind a function to be executed whenever the DOM is ready to be - * traversed and manipulated. This is probably the most important - * function included in the event module, as it can greatly improve - * the response times of your web applications. - * - * In a nutshell, this is a solid replacement for using window.onload, - * and attaching a function to that. By using this method, your bound function - * will be called the instant the DOM is ready to be read and manipulated, - * which is when what 99.99% of all JavaScript code needs to run. - * - * There is one argument passed to the ready event handler: A reference to - * the jQuery function. You can name that argument whatever you like, and - * can therefore stick with the $ alias without risk of naming collisions. - * - * Please ensure you have no code in your <body> onload event handler, - * otherwise $(document).ready() may not fire. - * - * You can have as many $(document).ready events on your page as you like. - * The functions are then executed in the order they were added. - * - * @example $(document).ready(function(){ Your code here... }); - * - * @example jQuery(function($) { - * // Your code using failsafe $ alias here... - * }); - * @desc Uses both the [[Core#.24.28_fn_.29|shortcut]] for $(document).ready() and the argument - * to write failsafe jQuery code using the $ alias, without relying on the - * global alias. - * - * @name ready - * @type jQuery - * @param Function fn The function to be executed when the DOM is ready. - * @cat Events - * @see $.noConflict() - * @see $(Function) - */ ready: function(f) { + // Attach the listeners + bindReady(); + // If the DOM is already ready if ( jQuery.isReady ) // Execute the function immediately f.apply( document, [jQuery] ); // Otherwise, remember the function for later - else { + else // Add the function to the wait list - jQuery.readyList.push( function() { return f.apply(this, [jQuery]) } ); - } + jQuery.readyList.push( function() { return f.apply(this, [jQuery]); } ); return this; } @@ -583,359 +407,23 @@ jQuery.extend({ } }); -new function(){ - - /** - * Bind a function to the scroll event of each matched element. - * - * @example $("p").scroll( function() { alert("Hello"); } ); - * @before

Hello

- * @result

Hello

- * - * @name scroll - * @type jQuery - * @param Function fn A function to bind to the scroll event on each of the matched elements. - * @cat Events - */ - - /** - * Bind a function to the submit event of each matched element. - * - * @example $("#myform").submit( function() { - * return $("input", this).val().length > 0; - * } ); - * @before
- * @desc Prevents the form submission when the input has no value entered. - * - * @name submit - * @type jQuery - * @param Function fn A function to bind to the submit event on each of the matched elements. - * @cat Events - */ - - /** - * Trigger the submit event of each matched element. This causes all of the functions - * that have been bound to that submit event to be executed, and calls the browser's - * default submit action on the matching element(s). This default action can be prevented - * by returning false from one of the functions bound to the submit event. - * - * Note: This does not execute the submit method of the form element! If you need to - * submit the form via code, you have to use the DOM method, eg. $("form")[0].submit(); - * - * @example $("form").submit(); - * @desc Triggers all submit events registered to the matched form(s), and submits them. - * - * @name submit - * @type jQuery - * @cat Events - */ - - /** - * Bind a function to the focus event of each matched element. - * - * @example $("p").focus( function() { alert("Hello"); } ); - * @before

Hello

- * @result

Hello

- * - * @name focus - * @type jQuery - * @param Function fn A function to bind to the focus event on each of the matched elements. - * @cat Events - */ - - /** - * Trigger the focus event of each matched element. This causes all of the functions - * that have been bound to thet focus event to be executed. - * - * Note: This does not execute the focus method of the underlying elements! If you need to - * focus an element via code, you have to use the DOM method, eg. $("#myinput")[0].focus(); - * - * @example $("p").focus(); - * @before

Hello

- * @result alert('Hello'); - * - * @name focus - * @type jQuery - * @cat Events - */ - - /** - * Bind a function to the keydown event of each matched element. - * - * @example $("p").keydown( function() { alert("Hello"); } ); - * @before

Hello

- * @result

Hello

- * - * @name keydown - * @type jQuery - * @param Function fn A function to bind to the keydown event on each of the matched elements. - * @cat Events - */ - - /** - * Bind a function to the dblclick event of each matched element. - * - * @example $("p").dblclick( function() { alert("Hello"); } ); - * @before

Hello

- * @result

Hello

- * - * @name dblclick - * @type jQuery - * @param Function fn A function to bind to the dblclick event on each of the matched elements. - * @cat Events - */ - - /** - * Bind a function to the keypress event of each matched element. - * - * @example $("p").keypress( function() { alert("Hello"); } ); - * @before

Hello

- * @result

Hello

- * - * @name keypress - * @type jQuery - * @param Function fn A function to bind to the keypress event on each of the matched elements. - * @cat Events - */ - - /** - * Bind a function to the error event of each matched element. - * - * @example $("p").error( function() { alert("Hello"); } ); - * @before

Hello

- * @result

Hello

- * - * @name error - * @type jQuery - * @param Function fn A function to bind to the error event on each of the matched elements. - * @cat Events - */ - - /** - * Bind a function to the blur event of each matched element. - * - * @example $("p").blur( function() { alert("Hello"); } ); - * @before

Hello

- * @result

Hello

- * - * @name blur - * @type jQuery - * @param Function fn A function to bind to the blur event on each of the matched elements. - * @cat Events - */ - - /** - * Trigger the blur event of each matched element. This causes all of the functions - * that have been bound to that blur event to be executed, and calls the browser's - * default blur action on the matching element(s). This default action can be prevented - * by returning false from one of the functions bound to the blur event. - * - * Note: This does not execute the blur method of the underlying elements! If you need to - * blur an element via code, you have to use the DOM method, eg. $("#myinput")[0].blur(); - * - * @example $("p").blur(); - * @before

Hello

- * @result alert('Hello'); - * - * @name blur - * @type jQuery - * @cat Events - */ - - /** - * Bind a function to the load event of each matched element. - * - * @example $("p").load( function() { alert("Hello"); } ); - * @before

Hello

- * @result

Hello

- * - * @name load - * @type jQuery - * @param Function fn A function to bind to the load event on each of the matched elements. - * @cat Events - */ - - /** - * Bind a function to the select event of each matched element. - * - * @example $("p").select( function() { alert("Hello"); } ); - * @before

Hello

- * @result

Hello

- * - * @name select - * @type jQuery - * @param Function fn A function to bind to the select event on each of the matched elements. - * @cat Events - */ - - /** - * Trigger the select event of each matched element. This causes all of the functions - * that have been bound to that select event to be executed, and calls the browser's - * default select action on the matching element(s). This default action can be prevented - * by returning false from one of the functions bound to the select event. - * - * @example $("p").select(); - * @before

Hello

- * @result alert('Hello'); - * - * @name select - * @type jQuery - * @cat Events - */ - - /** - * Bind a function to the mouseup event of each matched element. - * - * @example $("p").mouseup( function() { alert("Hello"); } ); - * @before

Hello

- * @result

Hello

- * - * @name mouseup - * @type jQuery - * @param Function fn A function to bind to the mouseup event on each of the matched elements. - * @cat Events - */ - - /** - * Bind a function to the unload event of each matched element. - * - * @example $("p").unload( function() { alert("Hello"); } ); - * @before

Hello

- * @result

Hello

- * - * @name unload - * @type jQuery - * @param Function fn A function to bind to the unload event on each of the matched elements. - * @cat Events - */ - - /** - * Bind a function to the change event of each matched element. - * - * @example $("p").change( function() { alert("Hello"); } ); - * @before

Hello

- * @result

Hello

- * - * @name change - * @type jQuery - * @param Function fn A function to bind to the change event on each of the matched elements. - * @cat Events - */ - - /** - * Bind a function to the mouseout event of each matched element. - * - * @example $("p").mouseout( function() { alert("Hello"); } ); - * @before

Hello

- * @result

Hello

- * - * @name mouseout - * @type jQuery - * @param Function fn A function to bind to the mouseout event on each of the matched elements. - * @cat Events - */ - /** - * Bind a function to the keyup event of each matched element. - * - * @example $("p").keyup( function() { alert("Hello"); } ); - * @before

Hello

- * @result

Hello

- * - * @name keyup - * @type jQuery - * @param Function fn A function to bind to the keyup event on each of the matched elements. - * @cat Events - */ - - /** - * Bind a function to the click event of each matched element. - * - * @example $("p").click( function() { alert("Hello"); } ); - * @before

Hello

- * @result

Hello

- * - * @name click - * @type jQuery - * @param Function fn A function to bind to the click event on each of the matched elements. - * @cat Events - */ - - /** - * Trigger the click event of each matched element. This causes all of the functions - * that have been bound to thet click event to be executed. - * - * @example $("p").click(); - * @before

Hello

- * @result alert('Hello'); - * - * @name click - * @type jQuery - * @cat Events - */ +jQuery.each( ("blur,focus,load,resize,scroll,unload,click,dblclick," + + "mousedown,mouseup,mousemove,mouseover,mouseout,change,select," + + "submit,keydown,keypress,keyup,error").split(","), function(i,o){ + + // Handle event binding + jQuery.fn[o] = function(f){ + return f ? this.bind(o, f) : this.trigger(o); + }; +}); - /** - * Bind a function to the resize event of each matched element. - * - * @example $("p").resize( function() { alert("Hello"); } ); - * @before

Hello

- * @result

Hello

- * - * @name resize - * @type jQuery - * @param Function fn A function to bind to the resize event on each of the matched elements. - * @cat Events - */ +var readyBound = false; - /** - * Bind a function to the mousemove event of each matched element. - * - * @example $("p").mousemove( function() { alert("Hello"); } ); - * @before

Hello

- * @result

Hello

- * - * @name mousemove - * @type jQuery - * @param Function fn A function to bind to the mousemove event on each of the matched elements. - * @cat Events - */ +function bindReady(){ + if ( readyBound ) return; + readyBound = true; - /** - * Bind a function to the mousedown event of each matched element. - * - * @example $("p").mousedown( function() { alert("Hello"); } ); - * @before

Hello

- * @result

Hello

- * - * @name mousedown - * @type jQuery - * @param Function fn A function to bind to the mousedown event on each of the matched elements. - * @cat Events - */ - - /** - * Bind a function to the mouseover event of each matched element. - * - * @example $("p").mouseover( function() { alert("Hello"); } ); - * @before

Hello

- * @result

Hello

- * - * @name mouseover - * @type jQuery - * @param Function fn A function to bind to the mousedown event on each of the matched elements. - * @cat Events - */ - jQuery.each( ("blur,focus,load,resize,scroll,unload,click,dblclick," + - "mousedown,mouseup,mousemove,mouseover,mouseout,change,select," + - "submit,keydown,keypress,keyup,error").split(","), function(i,o){ - - // Handle event binding - jQuery.fn[o] = function(f){ - return f ? this.bind(o, f) : this.trigger(o); - }; - - }); - // If Mozilla is used if ( jQuery.browser.mozilla || jQuery.browser.opera ) // Use the handy event callback @@ -981,18 +469,4 @@ new function(){ // A fallback to window.onload, that will always work jQuery.event.add( window, "load", jQuery.ready ); - -}; - -// Clean up after IE to avoid memory leaks -if (jQuery.browser.msie) - jQuery(window).one("unload", function() { - var global = jQuery.event.global; - for ( var type in global ) { - var els = global[type], i = els.length; - if ( i && type != 'unload' ) - do - els[i-1] && jQuery.event.remove(els[i-1], type); - while (--i); - } - }); +}