Javascript/jQuery - replace last occurence of a word in a string

Question

I have a string that ends with a fixed word - Button. Now I need to replace that word with ''. How can I do it? Also, if my string is something like ButtonButton or similar, I need to cut out only last Button.

Answer 1

var original = 'ButtonButton';
var newString = original.replace(/Button$/, '');
// "Button"