Uppercase first letter of variable

Question

I have searched over the web can can\'t find anything to help me. I want to make the first letter of each word upper case within a variable.

So far i have tried:

Answer 1

var mystring = "hello World"
mystring = mystring.substring(0,1).toUpperCase() + 
mystring.substring(1,mystring.length)

console.log(mystring) //gives you Hello World