js异步调用的几种方法

    Ext.Ajax.request({   
   
                url : urlStr,   
   
                params : paramsObj,   
   
                method : 'POST',   
   
                success :  
   function(response) {   
   
                     
   if (callbackFunc) {   
   
                         
   var result = Ext.util.JSON   
   
                                .decode(response.responseText);   
   
                         
   var cbfn = callbackFunc.createCallback(result);   
   
                        cbfn();   
   
                    }   
   
                },   
   
                failure :  
   function() {   
   
                    Ext.Msg.alert("提示", "方法调用失败");   
   
                }   
   
            });   
   
}  
  

 

Jquery ajax 的 $.ajax(),$.post(),$.get(),$.getJSON();

    $.ajax({ 
   
 
   
                    type: "post", 
   
 
   
                    url: "JqueryCSMethodForm.aspx/GetNowDate", 
   
 
   
                    datatype: "json", 
   
 
   
                    contentType: "application/json; charset=utf-8", 
   
 
   
                    success:  
   function(data) { 
   
 
   
                        $("input#showTime").val(eval('(' + data.d + ')')[0].nowtime); 
   
 
   
                    }, 
   
 
   
                    error:  
   function(XMLHttpRequest, textStatus, errorThrown) { 
   
 
   
                        alert(errorThrown); 
   
 
   
                    } 
   
 
   
                }); 
  

 

jQuery.post( url [, data] [, success(data, textStatus, jqXHR)] [, dataType] )

http://api.jquery.com/jQuery.post/
 

 

 
    
    jQuery.get( url [, data] [, success(data, textStatus, jqXHR)] [, dataType] ) 
   $.get("test.cgi", { name: "John", time: "2pm" }, 
   
    
   function(data){ 
   
     alert("Data Loaded: " + data); 
   
   }); 
  

 

    $.getJSON("http://api.flickr.com/services/feeds/photos_public.gne?jsoncallback=?", 
   
  { 
   
    tags: "cat", 
   
    tagmode: "any", 
   
    format: "json" 
   
  }, 
   
   
   function(data) { 
   
    $.each(data.items,  
   function(i,item){ 
   
      $("<img/>").attr("src", item.media.m).appendTo("#images"); 
   
       
   if ( i == 3 )  
   return  
   false; 
   
    }); 
   
  });