Allow only numeric values from Keyboard using jquery

Title: How to allow only number in asp.net using JQuery

Description:As we know this is the validation kind of functionality of a control in any web application.the below example will describe how to allow only number when you click on the keyboard.So the required field will not the characters from the board

function NumericOnly(e) {
var presskey;
if (navigator.appName.lastIndexOf("Microsoft Internet Explorer") > -1)
presskey= e.keyCode;else
presskey= e.which;if ((presskey== 0 || presskey== 8 || presskey== 9))       
return true;
if ((presskey> 47 && presskey< 58))
return true;
else { e.returnValue = null; return false;
}
}