JQuery Allow Only Numbers

For a frontend developer when it is asked to do something unique that person will think of JQuery first. Today a simple jquery code to allow only numbers to a text-box. Below code will allow following key events :

• Backspace


• Delete


• Tab


• Escape


• Enter


• Ctrl+A


• Home


• end


• left


• right

Just add a class to textbox .onlyNumbers and paste the following jquery code :

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[js]
$(document).ready(function() {

$(".onlyNumbers").keydown(function(event) {

if (event.keyCode == 46 || event.keyCode == 8 || event.keyCode == 9 || event.keyCode == 27 || event.keyCode == 13 || (event.keyCode == 65 && event.ctrlKey === true) || (event.keyCode >= 35 && event.keyCode <= 39)) {
return;
}
else {

if (event.shiftKey || (event.keyCode < 48 || event.keyCode > 57) && (event.keyCode < 96 || event.keyCode > 105)) {
event.preventDefault();
}
}
});

});
[/js]

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You can also apply this to textarea.

Demo:

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