JavaScript实现点击按钮获取输入框内容并改变样式

<!DOCTYPE HTML>

<html>

<head>

<meta http-equiv="content-type" content="text/html;charset=utf-8">

<title>Test</title>

<style type="text/css">

div{

display: none;

}

</style>

</head>

<body>

<input type="text" id="txt" value="" /> 

<input type="button" value="获取文本框内的值" id="btn" onclick="getText();"/>

<div id="showText">

</div>

<script type="text/javascript">

function getText () {

var showText = document.getElementById("showText");

showText.style.display = "block";

showText.style.color = "red";

showText.innerHTML=document.getElementById("txt").value;

}

</script>

</body>

</html>