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use Javascript "Onkeypress" command to accept only "numeric".

Tue, 17 Aug 2004 20:02:06 -0700

Good day. Is there a way to filter typed inputs right upon typing the characters using Javascript? i plan on using Javascript's "Onkeypress" command to accept only "numeric, i.e., 1,2,3...", ". (dot)", and ", (comma)" command. please help.thanks in advance.

Re: use Javascript "Onkeypress" command to accept only "numeric".

Thu, 28 Jul 2005 02:59:09 -0700

: Good day. Is there a way to filter typed inputs right upon typing the characters using Javascript? i plan on using Javascript's "Onkeypress" command to accept only "numeric, i.e., 1,2,3...", ". (dot)", and ", (comma)" command. please help.thanks in advance.
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Here is your solution
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<Input Type="Text" Name="txtTerms" Value="" Size="20" Class="txtbk" onKeypress="if (event.keyCode < 44 || event.keyCode > 57 || event.keyCode==45 || event.keyCode==47) event.returnValue = false;">

Re: use Javascript "Onkeypress" command to accept only "numeric".

Thu, 10 Jun 2010 06:31:55 -0700

Basicallly When we trying to validate a form some time we need numeric validation for textbox.

We can validate textbox by onkeypress event of the control By checking whether the keycode of the key pressed as the user types falls within the range of the number keys 48-57(i.e 0-9 and '.') ,if not belong to that range it will return false then it will disable the keypress action
function NumericValidation(eventObj)
{
var keycode;

if(eventObj.keyCode) //For IE
keycode = eventObj.keyCode;
else if(eventObj.Which)
keycode = eventObj.Which; // For FireFox
else
keycode = eventObj.charCode; // Other Browser

http://www.mindfiresolutions.com/Numeric-validation-using-Javascript-612.php