Case insensitive replace all

Question

I am looking for any implementation of case insensitive replacing function. For example, it should work like this:

'This iS IIS'.replaceAll('is', 'as'); 

and result should be:

'Thas as Ias' 

Any ideas?

UPDATE:

It would be great to use it with variable:

var searchStr = 'is'; 'This iS IIS'.replaceAll(searchStr, 'as'); 

Answer 1

Try regex:

'This iS IIS'.replace(/is/ig, 'as'); 

Working Example: http://jsfiddle.net/9xAse/

e.g:
Using RegExp object:

var searchMask = "is"; var regEx = new RegExp(searchMask, "ig"); var replaceMask = "as";  var result = 'This iS IIS'.replace(regEx, replaceMask); 

Answer 2

String.prototype.replaceAll = function(strReplace, strWith) {     // See http://stackoverflow.com/a/3561711/556609     var esc = strReplace.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&');     var reg = new RegExp(esc, 'ig');     return this.replace(reg, strWith); }; 

This implements exactly the example you provided.

'This iS IIS'.replaceAll('is', 'as'); 

Returns

'Thas as Ias'