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HTML表单密码框里的默认提示信息效果代码

2015-02-02 00:08 267 查看

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>密码框提示信息</title>
<script language="javascript" type="text/javascript">
// JScript 文件
function getStar(control,logValue,txt)
{
if(control.value==logValue)
{
control.value="";
control.style.color="black";

if(control.type=="text"){
control.style.display = "none";
document.getElementById('pass').style.display = "block";
document.getElementById('pass').style.color="black";
document.getElementById('pass').value="";
document.getElementById('pass').focus();//加上
}else{
var pass = document.getElementById('pass').value;
if(pass.length<1){
control.style.display = "none";
document.getElementById('log').style.display = "block";
}
}
}
}
function GetEnd(control,logValue,txt)
{
if(control.value=="")
{
control.value="输入内容";
control.style.color="gainsboro";

if(control.type=="password"){
control.style.display = "none";
document.getElementById('log').style.display = "block";
document.getElementById('log').value="输入内容";
document.getElementById('log').style.color="gainsboro";
//document.getElementById('log').focus();//加上
}
else{
var pass = document.getElementById('log').value;

if(pass.length<1){
control.style.display = "none";
document.getElementById('log').style.display = "block";
}
}
}
}
</script>
</head>
<body>
<input id="log" name="log" value="输入内容" style="width: 169px; color: gainsboro" type="text" onfocus="getStar(this,'输入内容','password')"/>
<input id="pass" name="pass" style="display:none; width: 169px;" type="password" onblur="GetEnd(this,'输入内容','password')" />
</body>
</html>

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