HTML表单密码框里的默认提示信息效果代码_html给password设置提示-优快云博客

本文链接：https://blog.youkuaiyun.com/ffggnfgf/article/details/43384729

<!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" οnfοcus="getStar(this,'输入内容','password')"/>
<input id="pass" name="pass" style="display:none; width: 169px;" type="password" οnblur="GetEnd(this,'输入内容','password')" />
</body>
</html>