$.ajax({
		type : "get",
		async:false,
		url : "http://127.0.0.3/json/ajax_do.php",
		dataType : "jsonp",
		jsonp: "callback",//服务端用于接收callback调用的function名的参数
		jsonpCallback:"success_jsonpCallback",//callback的function名称
		success : function(json){
			alert(json);
			console.log(json);
		},
		error:function(){
			alert('fail');
		}
	});




/************************************/

$.ajax({
    url:'http://127.0.0.3/json/ajax_do.php?callback=?',
    type:'get',
    dataType:'jsonp',  
    data:$("#projectForm").serialize(),
    success:function(d){
       console.log(d);
    },
    error:function(msg){
        alert("授权申请提交失败,请联系技术服务！"); 
    }
});


/******************************************/
var jqxhr = $.getJSON( "http://127.0.0.3/json/ajax_do.php?callback=?",
						$("#projectForm").serialize() ,
						function(d) {
						  console.log( "success" );
						})
						.done(function() {
							console.log( "second success" );
						})
						.fail(function() {
							console.log( "error" );
						})
						.always(function() {
							console.log( "complete" );
						});
jqxhr.complete(function() {
  console.log( "second complete" );
});