HTML text box prompt effect sample code

2020-03-30 03:28:32
OfStack
The complete code is as follows:


<!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" xml:lang="en" lang="en">

<head>

  <title>html Text box prompt effect </title>

  <style type="text/css">

  *{

  margin:0px;padding:0px;font-size:12px;

  }

    input{

      width:100px;height:20px;border:1px solid #ccc;

    }

  </style>

</head>

<body>

<script language="javascript">

function tips(id,str){

var l=document.getElementById(id).offsetLeft+120;

var t=document.getElementById(id).offsetTop;

document.getElementById("tips").innerHTML=" Tip: "+str;

document.getElementById("tips").style.left=l+"px";

document.getElementById("tips").style.top=t+"px";

document.getElementById("tips").style.display="";

}

function outtips(){

    document.getElementById("tips").style.display='none';

}

</script>

<div id="tips" style="position:absolute;border:1px solid #ccc;padding:0px 3px;color:#f00;display:none;height:20px;line-height:20px;background:#fcfcfc"></div>

<br />

 Name: <input type="text" id="username" onfocus="tips('username',' Maximum name length 16 A character ')" onblur="outtips()" />

<br />

 Password: <input type="password" id="password" onfocus="tips('password',' Password length must be in 3-18 Between a ')" onblur="outtips()" />

</body>

</html>