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function callBack(result){
}
myDwrService.doSomething(param1,param2,callBack);//DWRµÄÍÆ¼ö·½Ê½
//»òÕß
myDwrService.doSomething(callBack,param1,param2);
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<html>
<head>
<script>   
    var context="È«¾Ö";
    var testObj={       
        context:"³õʼ",
        callback:function (str){//»Øµ÷º¯Êý
            alert("callback:ÎÒËù´¦µÄÉÏÏÂÎÄÖУ¬context="+this.context+"£¬ÎÒ±»»Øµ÷µÄ·½Ê½£º"+str);
        }       
    };//´´½¨Ò»¸ö¶ÔÏó£¬×÷Ϊ²âÊԻص÷º¯ÊýµÄÉÏÏÂÎÄ
    testObj.context="ÒÑÉèÖÃ";
   
    function testCall(){               
        callMethod(testObj.callback);
        callObjMethod(testObj,testObj.callback);       
    } 
    function callObjMethod(obj,method){       
        method.call(obj,"Ö¸¶¨ÏÔʽ¶ÔÏóÉÏÏÂÎĻص÷");
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