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<body>
<label for="">ajax 跨域方式 驗證用戶名</label>
<div>用戶名: <input type="text" id="username" placeholder="請輸入你的用戶名"/></div>
<div>
<span id="msg">獲取的信息顯示在這裏</span>
<br/>
<span id="get_msg_do">點擊獲取</span>
</div>
</body>
<script>
$(function () {
$("#get_msg_do").click(function(){
var name = $("#username").val();
var url = 'http://maizi.itpaimai.com/jquery/ajax/';
var data = {username:name};
$.ajax({
type:"GET",
url:url,
data:data,
dataType:'jsonp',
success:function(msgs){
$("#msg").text(msgs);
},
error:function(){
$("#msg").text('link fail');
},
});
});
});
</script>
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