


Jquery Ajax Learning Example 7 Ajax All Process Event Analysis Example_jquery
一、Ajax所有过程事件分析
JQuery在执行Ajax的过程中会触发很多事件。
这些事件可以分为两种事件,一种是局部事件(Local),一种是全局事件(Global)。
局部事件:可以通过$.ajax来调用,你某一个Ajax请求不希望产生全局的事件,则可以设置global:false。
全局事件:跟click等事件类似,可以绑定到到每一个DOM元素上。
这些事件的按照事件的触发顺序如下介绍:
局部事件(Local) | 全局事件(Global) |
ajaxStart 全局事件 开始新的Ajax请求,并且此时没有其他ajax请求正在进行。 |
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beforeSend 局部事件 当一个Ajax请求开始时触发。如果需要,你可以在这里设置XHR对象。 |
ajaxSend 全局事件 请求开始前触发的全局事件。 |
success 局部事件 请求成功时触发。即服务器没有返回错误,返回的数据也没有错误。 |
ajaxSuccess 全局事件 全局的请求成功。 |
error 局部事件 仅当发生错误时触发。你无法同时执行success和error两个回调函数。 |
ajaxError 全局事件 全局的发生错误时触发。 |
complete 局部事件 不管你请求成功还是失败,即便是同步请求,你都能在请求完成时触发这个事件。 |
ajaxComplete 全局事件 全局的请求完成时触发。 |
ajaxStop 全局事件 当没有Ajax正在进行中的时候,触发。 |
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注:除了ajaxStart和ajaxStop之外,其他的事件都有3个参数 event, XMLHttpRequest, ajaxOptions 第一个是事件,第二个是XHR对象,第三个参数最有用,是当时调用这个ajax的时候的参数。 对于ajaxError,还有第四个参数thrownError,只有当异常发生时才会被传递。 |
二、Ajax所有过程事件示例
2.1、HTML代码
2.2、Jquery Ajax脚本
局部事件(Local)实例 | 全局事件(Global)实例 |
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$.ready(function BtnGlobalClick() { { " + $(domEle).children("title").text() + " ");($(this).text()); $(this).text("Start a new Ajax request"); $(this).text( "When no Ajax is in progress"); alert($(this). ; $(this). ("#Process").ajaxSuccess (function() { $(this). $("#Process ").ajaxComplete(function() { $("#Process").ajaxError(function() { ); }); |

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