最简单的JQ实现

<!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)
}


</script>
</head>

<body>
输入消息:<input type="text" name="msg" id="msg" />
<input type="button" value="选择" onclick="fun()"/>
</body>
</html>

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转载自www.cnblogs.com/ssC2H4/p/8875617.html