The JavaScript Source: Forms : Block Key Press

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General

Tired of customers using characters that could possibly render your forms useless? This script prevents a user from entering certain special characters in designated form fields.

Notes

Created by: Corneliu Lucian 'Kor' Rusu
E-mail: corneliulucian[at]gmail[dot]com
Posted: August 17, 2007

Source Code

Paste this source code into the designated areas.

External file

Paste this code into an external JavaScript file named: blockKeyPress.js

/* This script and many more are available free online at
The JavaScript Source!! http://javascript.internet.com
Created by: Corneliu Lucian 'Kor' Rusu | corneliulucian[at]gmail[dot]com */
var r={
  'special':/[\W]/g,
  'quotes':/['\''&'\"']/g,
  'notnumbers':/[^\d]/g
}

function valid(o,w){
  o.value = o.value.replace(r[w],'');
}

Head

Paste this code into the HEAD section of your HTML document.


<script type="text/javascript" src="blockKeyPress.js"></script>

Body

Paste this code into the BODY section of your HTML document


<form id="myform" method="" onsubmit="return false;">
  This field will not accept special characters: (like !@#$%* etc,) - but accepts underscore _
  <br>
  <input type="text" size="35" name="comments" onkeyup="valid(this,'special')" onblur="valid(this,'special')"></textarea>
  <br>
  <br>
  This field will not accept double or single quotes:
  <br>
  <input type="text" size="35" name="txtEmail" onkeyup="valid(this,'quotes')" onblur="valid(this,'quotes')">
  <br>
  <br>
  This field will only accept integer numbers:
  <br>
  <input type="text" size="35" name="txtPostal" onkeyup="valid(this,'notnumbers')" onblur="valid(this,'notnumbers')">
</form>

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User Comments

3. From: Mukesh
Good job
06/03/2008 09:15:50

2. From: Farreina
09/13/2007 23:40:12

1. From: Manojbabu
nice
08/18/2007 04:41:50

Navigation Menu

Internet.commerce

Internet.com

Developer Channel

Great Sites

Promotions

General

Notes

Source Code

External file

Head

Body

User Comments

3. From: MukeshGood job06/03/2008 09:15:50

2. From: Farreina09/13/2007 23:40:12

1. From: Manojbabunice08/18/2007 04:41:50

3. From: Mukesh
Good job
06/03/2008 09:15:50

2. From: Farreina
09/13/2007 23:40:12

1. From: Manojbabu
nice
08/18/2007 04:41:50