jquery修改日志
增加功能:为ajax请求增加回调函数:beforeSuccess(),其参数与success()相同,但在success()执行前执行
修改版本:jquery-2.1.3.js
1、在 ajax: function( url, options ) 中,源码line:7933-7935
将以下代码:
// Deferreds
deferred = jQuery.Deferred(),
completeDeferred = jQuery.Callbacks("once memory"),
修改成:
// Deferreds
deferred = jQuery.Deferred(),
beforeDeferred = jQuery.Callbacks("once memory"),//增加本行代码
completeDeferred = jQuery.Callbacks("once memory"),
2、在 ajax: function( url, options ) 中的jqXHR定义,源码line:8004-8012,在abort()方法后增加beforeSuccess()方法
将以下代码:
// Cancel the request
abort: function( statusText ) {
var finalText = statusText || strAbort;
if ( transport ) {
transport.abort( finalText );
}
done( 0, finalText );
return this;
}
修改成:
// Cancel the request
abort: function( statusText ) {
var finalText = statusText || strAbort;
if ( transport ) {
transport.abort( finalText );
}
done( 0, finalText );
return this;
},
replaceState: false, //增加本参数
beforeSuccess: function (){//增加本方法
}
3、在 ajax: function( url, options ) 中,源码line:8015-8019行
将以下代码:
// Attach deferreds
deferred.promise( jqXHR ).complete = completeDeferred.add;
jqXHR.success = jqXHR.done;
jqXHR.error = jqXHR.fail;
修改成:
// Attach deferreds
deferred.promise( jqXHR ).complete = completeDeferred.add;
deferred.promise( jqXHR ).beforeSuccess = beforeDeferred.add;//增加本行代码
jqXHR.success = jqXHR.done;
jqXHR.error = jqXHR.fail;
4、在 ajax: function( url, options ) 中,源码line:8134-8137
将以下代码:
// Install callbacks on deferreds
for ( i in { success: 1, error: 1, complete: 1 } ) {
jqXHR[ i ]( s[ i ] );
}
修改成:
// Install callbacks on deferreds
for ( i in { beforeSuccess: 1, success: 1, error: 1, complete: 1 } ) {
jqXHR[ i ]( s[ i ] );
}
5、在function done()方法中,大概line:8100-8300行, 源码为line:8174-8284
将以下代码:
// Success/Error
if ( isSuccess ) {
deferred.resolveWith( callbackContext, [ success, statusText, jqXHR ] );
} else {
deferred.rejectWith( callbackContext, [ jqXHR, statusText, error ] );
}
修改成:
// Success/Error
if ( isSuccess ) {
if(s.replaceSuccess){
s.replaceSuccess( success, statusText, jqXHR );
if(jqXHR.replaceState){
beforeDeferred.fireWith( callbackContext, [ success, statusText, jqXHR ] );
}else{
beforeDeferred.fireWith( callbackContext, [ success, statusText, jqXHR ] );
deferred.resolveWith( callbackContext, [ success, statusText, jqXHR ] );
}
}else{
beforeDeferred.fireWith( callbackContext, [ success, statusText, jqXHR ] );
deferred.resolveWith( callbackContext, [ success, statusText, jqXHR ] );
}
} else {
deferred.rejectWith( callbackContext, [ jqXHR, statusText, error ] );
}
6、在代码最后,增加$.ajaxSetup(),为了修改方便才放最后
将以下代码:
return jQuery;
}));
修改成:
return jQuery;
}));
$.ajaxSetup({
replaceSuccess: function(obj, status, xhr){
//返回xhr.replaceState=true不执行自定义的success(),返回xhr.replaceState=false执行完replaceSuccess()方法后就执行success();默认为false
if($.type(obj.error_code) != 'undefined'){
//自定义处理
alert(obj.error);
xhr.replaceState = false;
}
},
beforeSuccess: function(response, status, xhr){
}
});