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"

Answer 2

var str = "you string with button";
var newstring = str.replace(/button$/i, '');

Read about replace()

Answer 3

If you don't have to check, if it really ends with Button , just remove the last 6 letters:

var str = "ButtonButton"; 
str = str.substr(0,str.length-6); 
console.log(str); //"Button"