JSFiddle - React, Tailwind, and code Playground

by ult_combo

JavaScript

function getAndIncrementLastNumber(str) {
    return str.replace(/\d+$/, function(s) {
        return ++s;
    });
}

var myStr = "foo_0_bar_0";
newStr = getAndIncrementLastNumber(myStr); 
alert(newStr); // "foo_0_bar_1"