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 = \'\\


        
                      

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Answer 1

ES5 and earlier versions

(function(){/**
some random
multi line
text here
**/}).toString().slice(15,-5);

ES6 and later versions

`some random
multi line
text here`

result

some random
multi line
text here

Answer 2

If you have some html and jQuery at hand and the string is valid HTML, this may be useful:

<div id="heredoc"><!--heredoc content
with multiple lines, even 'quotes' or "double quotes",
beware not to leave any tag open--></div>
<script>
var str = (function() {
   var div = jQuery('#heredoc');
   var str = div.html();
   str = str.replace(/^<\!--/, "").toString();
   str = str.replace(/-->$/, "").toString();
   return str;
})();
</script>

If text have comments "<!-- -->" in between, it works as well, but a part of the text may be visible. Here's the fiddle: https://jsfiddle.net/hr6ar152/1/