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On focus clear text field content and pass parameter to function .
Code:

<html>
<
title>Pass parameter </title>
<
head>
 
 
<script language="JavaScript" type="text/javascript">
<!--
function passParameter(age){
    document.getElementById('output').innerHTML = "Your age is " + age + " !";
    alert("Your age is " + age + " !";);
}
    
//-->
</script>

</head>

<body>
 
<div id="output">Print age here</div>
    <form name="ageForm">
        <input type="text" name="age" value="Please enter your age" onfocus="document.ageForm.age.value=''">
        <input type="button" onclick="passParameter(document.ageForm.age.value)" value="Submit">
    </form>


</body>
</HTML>




_________________
M. S. Rakha, Ph.D.
Queen's University
Canada


Author:
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