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jQuery val() - 获取值

<!DOCTYPE html>
<html>
<meta charset="utf-8">
<head>
<script src="http://cdn.static.runoob.com/libs/jquery/1.10.2/jquery.min.js">
</script>
<script>
$(document).ready(function(){
$("button").click(function(){
alert("值为: " + $("#test").val());
});
});
</script>
</head>

<body>
<p>名称: <input type="text" id="test" value="http://www.mamicode.com/测试"></p>
<button>显示值</button>
</body>
</html>

jQuery val() - 获取值