<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<script src="jquery-1.11.3.js"></script>
<script>
window.onload = function(){
$("#btn").click(function(){
//1、获取 uname 的值
var uname = $("#uname").val();
//2、将uname的值显示在#show中
$("#show").html(uname);
//3、设置#show的css样式
$("#show").css({
"font-size":"32px",
"color":"red",
"background":"yellow",
"font-weight":"bold"
});
});
}
</script>
</head>
<body>
<p>
用户名：
<input type="text" id="uname">
<button id="btn">显示</button>
</p>
<div id="show"></div>
</body>
</html>
原文：https://www.cnblogs.com/-hjj/p/9943454.html