Revision cbaa9e32-71f9-4fd2-80a9-bc1135e6be93 - Stack Overflow

> **Possible Duplicate:** 
> [Escape string for use in Javascript regex](https://stackoverflow.com/questions/3446170/escape-string-for-use-in-javascript-regex) 

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I have a msg like this:

> **Max {0} chars allowed in {1}**

And I have a function to create a message using the arguments passed as

 for(var i = 0; i < agrs.length; i++){
 reg = new RegExp('\{'+i+'\}', 'gi');
 key = key.replace(reg,agrs[i])
 }

The problem is that it's not able to take the param `i` to create the reg exp.

What's the way to achieve this?