ajax请求学习之<XMLHttpRequest> 之使用jsonp来处理跨域

使用jsonp来处理跨域
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Demo</title>
<style>
body, input, select, button, h1 {
    font-size: 28px;
    line-height:1.7;
}
</style>
</head>

<body>

<h1>员工查询</h1>

<label>请输入员工编号：</label>
<input type="text" id="keyword" />
<button id="search">查询</button>
<p id="searchResult"></p>

<h1>员工新建</h1>
<label>请输入员工姓名：</label>
<input type="text" id="staffName" /><br>
<label>请输入员工编号：</label>
<input type="text" id="staffNumber" /><br>
<label>请选择员工性别：</label>
<select id="staffSex">
<option>女</option>
<option>男</option>
</select><br>
<label>请输入员工职位：</label>
<input type="text" id="staffJob" /><br>
<button id="save">保存</button>
<p id="createResult"></p>

<script src="http://apps.bdimg.com/libs/jquery/1.11.1/jquery.js"></script>
<script>
$(document).ready(function(){
    $("#search").click(function(){
        $.ajax({
            type: "GET",
            url: "http://127.0.0.1:8000/ajaxdemo/serverjsonp.php?number=" + $("#keyword").val(),
            dataType: "jsonp",
            jsonp: "callback",
            success: function(data) {
                if (data.success) {
                    $("#searchResult").html(data.msg);
                } else {
                    $("#searchResult").html("出现错误：" + data.msg);
                }
            },
            error: function(jqXHR){
               alert("发生错误：" + jqXHR.status);
            },
        });
    });

    $("#save").click(function(){
        $.ajax({
            type: "POST",
            url: "http://127.0.0.1:8000/ajaxdemo/serverjsonp.php",
            data: {
                name: $("#staffName").val(),
                number: $("#staffNumber").val(),
                sex: $("#staffSex").val(),
                job: $("#staffJob").val()
            },
            dataType: "json",
            success: function(data){
                if (data.success) {
                    $("#createResult").html(data.msg);
                } else {
                    $("#createResult").html("出现错误：" + data.msg);
                }
            },
            error: function(jqXHR){
               alert("发生错误：" + jqXHR.status);
            },
        });
    });
});
</script>
</body>
</html>