Javascript heredoc

Question

I need something like heredoc in JavaScript. Do you have any ideas for this? I need cross-browser functionality.

I found this:

heredoc = \'\\


        
      

Answer 1

Building on Zv_oDD's answer, I created a similar function for easier reuse.

Warning: This is a non-standard feature of many JS interpreters, and will probably be removed at some point, but as I'm building a script to be only used in Chrome, I am using it! Do not ever rely on this for client-facing websites!

// Multiline Function String - Nate Ferrero - Public Domain
function heredoc(fn) {
  return fn.toString().match(/\/\*\s*([\s\S]*?)\s*\*\//m)[1];
};

Use:

var txt = heredoc(function () {/*
A test of horrible
Multi-line strings!
*/});

Returns:

"A test of horrible
Multi-line strings!"

Notes:

1. Text is trimmed on both ends, so any extra whitespace on either end is OK.

Edits:

2/2/2014 - changed to not mess with the Function prototype at all and use the name heredoc instead.

5/26/2017 - updated whitespace to reflect modern coding standards.