怎么用jQuery实现这个呢
<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style>
button,p,label{
display: block;
margin: 20px 60px;
}
</style>
<script type="text/javascript">
function a(){
var m=document.getElementById('input').value;
var b=document.getElementById('p');
b.innerHTML="输出:"+m;
};
</script>
</head>
<body>
<label >输入: <input type="text" name="" id="input"></label>
<button id="button" onclick="a()">按钮</button>
<p id="p">输出：</p>
</body>
</html>
