Truncate string and append dots using Javascript

How to truncate a string and append 3 dots in JavaScript.

function add3Dots(string, limit)
{
  var dots = "...";
  if(string.length > limit)
  {
    // you can also use substr instead of substring
    string = string.substring(0,limit) + dots;
  }

    return string;
}

Call like this

add3Dots("Hello World",9);

The above function call returns this string

Hello Wor...

A minified version of the above function is given here

function add3Dots(string, limit)
{
   return string = string.length > limit ? string.substring(0,limit) + "...": string;
}

A über minified version (with the price of readability) is given here

function aD(s,l){return s=s.length>l?s.substring(0,l)+"...":s;}

In this case you need to call like this…

aD("Hello World",9);