JavaScript

Capitalize First Letter of a String:

String.prototype.capitalize = function() {

    return this.charAt(0).toUpperCase() + this.slice(1);

}

"hello world".capitalize();  =>  "Hello world" 

RegularExp for name validation:

var regex = /^[0-9a-zA-Z]+.{2,9}$/;

if (regex.test(name.value)) {

//Do something.

}