核心提示:ajax异步加载实现局部刷新,这是用jquery进行数据交互。script type=text/ src=${pageContext.request.contextPath }/js/jquery-2...
ajax异步加载实现局部刷新,这是用jquery进行数据交互。
<script type="text/javascript" src="${pageContext.request.contextPath }/js/jquery-2.1.0.js"></script>
<script type="text/javascript">
$(function(){
$("#inp1").blur(function(){
var name=$(this).val();
$.ajax({
url:"${pageContext.request.contextPath}/demo",
data:{"uname":name,"upwd":"jack123","age":12},
cache:"false",
async:"true",
dataType:"json",
type:"post",
success:function(data){
if(data.flag=="1"){
$("#sp").html("用户名存在");
}else{
$("#sp").html("");
}
},
error:function(){
alert("服务器端异常");
}
});
});
})
</script>
<title>Insert title here</title>
</head>
<body>
<input type="text" value="" id="inp1"><span id="sp"></span>
</body>
</html>
jquery封装的ajax 进行数据交互, 实现异步加载
<script type="text/JavaScript" src="${pageContext.request.contextPath }/js/jquery-2.1.0.js"></script> <script type="text/javascript"> var json={ "flag":"1" }; //alert(json.flag); $(function(){ //$.get(url,data,success(data,status,xhr),dataType) $("#btn").click(function(){ $.get( "${pageContext.request.contextPath}/demo", {"uname":"jack","upwd":"123","age":12}, function(data,status){ //var data={"flag":"1"} alert(data); if(data.flag=="1"){ $("#sp").html("用户名已经被占用").css("color","red"); }else{ $("#sp").html("用户名可以使用").css("color","green"); } }, "json" ); }) }); </script> </head> <body> <input type="button" id="btn" value="$.get异步请求服务器"><span id="sp"></span> </body>


