1. //异步ajax调用@H_404_13@
2. /**@H_404_13@
3. *异步调用ajax，成功后返回值，作为回调函数的参数调用失败会提示@H_404_13@
4. *@H_404_13@
5. *@param{}@H_404_13@
6. *urlStr@H_404_13@
7. *@param{}@H_404_13@
8. *paramsObj@H_404_13@
9. *@param{}@H_404_13@
10. *callbackFunc@H_404_13@
11. */@H_404_13@
12. functionajaxCall(urlStr,paramsObj,callbackFunc){@H_404_13@
13. Ext.Ajax.request({@H_404_13@
14. url:urlStr,@H_404_13@
15. params:paramsObj,@H_404_13@
16. method:'POST',@H_404_13@
17. success:function(response){@H_404_13@
18. if(callbackFunc){@H_404_13@
19. varresult=Ext.util.JSON@H_404_13@
20. .decode(response.responseText);@H_404_13@
21. varcbfn=callbackFunc.createCallback(result);@H_404_13@
22. cbfn();@H_404_13@
23. }@H_404_13@
24. },@H_404_13@
25. failure:function(){@H_404_13@
26. Ext.Msg.alert("提示","方法调用失败");@H_404_13@
27. }@H_404_13@
28. });@H_404_13@
29. }@H_404_13@

1. /**@H_404_13@
2. *通用JS同步ajax调用返回jsonObject@H_404_13@
3. *@H_404_13@
4. *@param{}@H_404_13@
5. *urlStr@H_404_13@
6. *@param{}@H_404_13@
7. *paramsStr为字符串键值对形式“key=value&key2=value2”@H_404_13@
8. *@return{}返回jsonObject@H_404_13@
9. */@H_404_13@
10. functionajaxSyncCall(urlStr,paramsStr){@H_404_13@
11. varobj;@H_404_13@
12. varvalue;@H_404_13@
13. if(window.ActiveXObject){@H_404_13@
14. obj=newActiveXObject('Microsoft.XMLHTTP');@H_404_13@
15. }elseif(window.XMLHttpRequest){@H_404_13@
16. obj=newXMLHttpRequest();@H_404_13@
17. }@H_404_13@
18. obj.open('POST',urlStr,false);@H_404_13@
19. obj.setRequestHeader('Content-Type','application/x-www-form-urlencoded');@H_404_13@
20. obj.send(paramsStr);@H_404_13@
21. varresult=Ext.util.JSON.decode(obj.responseText);@H_404_13@
22. returnresult;@H_404_13@
23. }@H_404_13@

1. //EXTJS同步ajax调用@H_404_13@
2. varconn=Ext.lib.Ajax.getConnectionObject().conn;@H_404_13@
3. conn.open("GET",'yoururl',false);@H_404_13@
4. conn.send(null);@H_404_13@
5. alert(conn.responseText);@H_404_13@

1. Ext.lib.Ajax.request=function(method,uri,cb,data,options){@H_404_13@
2. if(options){@H_404_13@
3. varhs=options.headers;@H_404_13@
4. if(hs){@H_404_13@
5. for(varhinhs){@H_404_13@
6. if(hs.hasOwnProperty(h)){@H_404_13@
7. this.initHeader(h,hs[h],false);@H_404_13@
8. }@H_404_13@
9. }@H_404_13@
10. }@H_404_13@
11. if(options.xmlData){@H_404_13@
12. if(!hs||!hs['Content-Type']){@H_404_13@
13. this.initHeader('Content-Type','text/xml',false);@H_404_13@
14. }@H_404_13@
15. method=(method?method:(options.method?options.method:'POST'));@H_404_13@
16. data=options.xmlData;@H_404_13@
17. }elseif(options.jsonData){@H_404_13@
18. if(!hs||!hs['Content-Type']){@H_404_13@
19. this.initHeader('Content-Type','application/json',false);@H_404_13@
20. }@H_404_13@
21. method=(method?method:(options.method?options.method:'POST'));@H_404_13@
22. data=typeofoptions.jsonData=='object'?Ext.encode(options.jsonData):options.jsonData;@H_404_13@
23. }@H_404_13@
24. }@H_404_13@

1. Ext.lib.Ajax.syncRequest=function(method,callback,postData)@H_404_13@
2. {@H_404_13@
3. varo=this.getConnectionObject();@H_404_13@
4. @H_404_13@
5. if(!o){@H_404_13@
6. returnnull;@H_404_13@
7. }@H_404_13@
8. else{@H_404_13@
9. o.conn.open(method,false);@H_404_13@
10. @H_404_13@
11. if(this.useDefaultXhrHeader){@H_404_13@
12. if(!this.defaultHeaders['X-Requested-With']){@H_404_13@
13. this.initHeader('X-Requested-With',this.defaultXhrHeader,true);@H_404_13@
14. }@H_404_13@
15. }@H_404_13@
16. @H_404_13@
17. if(postData&&this.useDefaultHeader&&(!this.hasHeaders||!this.headers['Content-Type'])){@H_404_13@
18. this.initHeader('Content-Type',this.defaultPostHeader);@H_404_13@
19. }@H_404_13@
20. @H_404_13@
21. if(this.hasDefaultHeaders||this.hasHeaders){@H_404_13@
22. this.setHeader(o);@H_404_13@
23. }@H_404_13@
24. @H_404_13@
25. o.conn.send(postData||null);@H_404_13@
26. this.handleTransactionResponse(o,callback);@H_404_13@
27. returno;@H_404_13@
28. }@H_404_13@
29. };@H_404_13@

1. //调用@H_404_13@
2. Ext.Ajax.request({@H_404_13@
3. url:'',@H_404_13@
4. scope:this,@H_404_13@
5. sync:true,@H_404_13@
6. success:function(){}@H_404_13@
7. });
   @H_404_13@

原文