<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</head>
<script type="text/javascript">
function huoqu(){
var G=document.getElementById('value').value;
alert(G);
}
</script>
<body>
<div class="containter">
<div class="row">
<div class="md-col-12">
<input type="text" id="value" placeholder="要獲取的輸入的值"/>
<input type="button" value="打印" onclick="huoqu()"/>
</div>
</div>
</div>
</body>
</html>