How to validate a letter and whitespace only input via JavaScript regular expression

Question

I have an input type="text" for names in my HTML code. I need to make sure that it is a string with letters from 'a' to 'z' and 'A' to 'Z' only, along with space(s).

This is my HTML code:

<form action="" name="f" onsubmit="return f1()">
                Name : <input type="text" name="name">

I'm expecting my JavaScript to be something like this:

function f1() 
{  
   var x=document.f.name.value;  
   ..... 
   ..... 
   return false;
}

PS: I'm not really familiar with Regular Expressions, so please do put up an explanation with the code.

Answer 1

You can use javascript test() method to validate name field. The test() method tests for a match in a string.

/^[A-Za-z\s]+$/.test(x) //returns true if matched, vaidates for a-z and A-Z and white space

or

/^[A-Za-z ]+$/.test(x)