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js修改input的type属性问题(兼容所有浏览器,主要用于密码类的默认有提示文字的效果)

2014-10-28 13:27 1081 查看
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">

<html>

<head>

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

<title>阿当制作</title>

</head>

<style type="text/css">

</style>

<body>

<input name="" type="text" value="密码" class="inputText_1" id="tx" style="width:100px;" />

<input name="" type="password" style="display:none;width:100px;" id="pwd" />

<script type="text/javascript">

var tx = document.getElementById("tx"), pwd = document.getElementById("pwd");

tx.onfocus = function(){

if(this.value != "密码") return;

this.style.display = "none";

pwd.style.display = "";

pwd.value = "";

pwd.focus();

}

pwd.onblur = function(){

if(this.value != "") return;

this.style.display = "none";

tx.style.display = "";

tx.value = "密码";

}

</script>

</body>

</html>
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