Javascript Regexp loop all matches

Question

I\'m trying to do something similar with stack overflow\'s rich text editor. Given this text:

[Text Example][1]

[1][http://www.example.com]

I

Answer 1

Here's somw small example I hope you can find useful. \number is used in regex to refer a group match number and $number is used in the replace function to refer group results so you can enforce that numbers will be the same with something like that if your text is

[Text Example][1]\n[1][http://www.example.com]

it will match and if it is

[Text Example][1]\n[2][http://www.example.com]

it won't

var re = /\[(.+?)\]\[([0-9]+)\s*.*\s*\[(\2)\]\[(.+?)\]/gi;
var str = '[Text Example][1]\n[1][http://www.example.com]';
var subst = '$1';

var result = str.replace(re, subst);
console.log(result);