<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title></title>
<script src="js/JQ3.3.1.js"></script>
<script type="text/javascript">
function fun(){
var msgValue = $(msg).val();//val()函数用以获得内容
console.log("输入的内容是:"+msgValue)
}
function fun2(){
var msgValue = $(msg).val("一键生成内容");//val()函数还有设置内容的功能
}
</script>
</head>
<body>
输入消息:<input type="text" name="msg" id="msg" />
<input type="button" value="输出内容" onclick="fun()"/>
<input type="button" value="设置内容" onclick="fun2()" />
</body>
</html>