使用Dojo实现页面不刷新提交数据

 

<div id=temp></div><button id="changeME">changeme</button>
<form name="add">
   <input type="text" name="a"/>
   <input type="text" name="b"/>
</form>
<script>
 dojo.addOnLoad(function(){
  var changeMeButton=dojo.byId("changeME");
  //给按钮添加点几事件
  dojo.event.connect(changeMeButton,"onclick",function(){
  //调用ajax
    dojo.io.bind({
    url:"/crifa/BusinessInfoList.do",
                content: {a: 1, b: 2},   //url参数方式
                formNode:add           //表单方式
    mimeType:"text/plain",
    load:function(type,data,evt){
     alert(data);
    },
    error:function(type,data,evt){
     alert(data);
    }
   });});
 });
</script> 

 

BusinessInfoList.java

    response.setCharacterEncoding( " utf-8 " );
        PrintWriter out = response.getWriter();
        out.print(a + b);
         return   null ;

一定要返回null