You can use HTML5 input type number to restrict only number entries:
<input type="number" name="someid" />
This will work only in HTML5 complaint browser. Make sure your html document's doctype is:
<!DOCTYPE html>
For general purpose, you can have JS validation as below:
function isNumberKey(evt){
var charCode = (evt.which) ? evt.which : event.keyCode
if (charCode > 31 && (charCode < 48 || charCode > 57))
return false;
return true;
}
<input type="text" name="number" onkeypress="return isNumberKey(event)"/>
If you want to allow decimals replace the "if condition" with this:
if (charCode > 31 && (charCode != 46 &&(charCode < 48 || charCode > 57)))
Thank you,
Govind
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