Use of String.Format in JavaScript?

Question

This is driving me nuts. I believe I asked this exact same question, but I can\'t find it any more (I used Stack Overflow search, Google Search, manually searched my po

Answer 1

Here is what I use. I have this function defined in a utility file:

  String.format = function() {
      var s = arguments[0];
      for (var i = 0; i < arguments.length - 1; i++) {       
          var reg = new RegExp("\\{" + i + "\\}", "gm");             
          s = s.replace(reg, arguments[i + 1]);
      }
      return s;
  }

And I call it like so:

var greeting = String.format("Hi, {0}", name);

I do not recall where I found this, but it has been very useful to me. I like it because the syntax is the same as the C# version.