Form Validation - Input Fields Text Changes at OnClick OnBlur OnFocus

by Hiroshi on 20-02-2008

We will be needing a js file and a page containing form input field to do this task.
What we are planning is, The input field contains default value. Onclick default value disappears and allows the user to insert text.
If the user types anything it remains there but if he does not write anything and clicks at next input field than the default value reappears in previous field.

JS file Code:

function remName(a, b){
if(a.value==b){
a.value='';
}else if(a.value==''){
a.value=b;
}else{
a.value=a.value;
}
}
 
function chkName(a, b){
if(a.value==''){
a.value=b;
}else{
a.value=a.value;
}
}

Two functions are controlling the event as above.

Call the js file in the page and define input fields and put some code like this.

Input Fields:

<font color="#ff0000"><code>&lt;input name="txtName" type="text" id="txtName" onfocus="remName(this, 'Name');" onblur="chkName(this, 'Name');" value="Name"&gt;
&lt;input name="txtEmail" type="text" id="txtEmail" value="Email" onfocus="remName(this, 'Email');" onblur="chkName(this, 'Email');"&gt;</code></font>

and so on...

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2 Responses to “Form Validation - Input Fields Text Changes at OnClick OnBlur OnFocus”

  1. Jan 3, 2009
    Grzesiek Says: Reply to this comment

    thanks, helpful

  2. May 30, 2009
    Soeren Says: Reply to this comment

    You don’t even need all that complicated stuff. You don’t even need a javascript file. Here is a much easier way.

    That’s all you need, and it does the exact same thing.

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