JSFiddle - React, Tailwind, and code Playground

JavaScript

var str = "18,000 USD";
str = str.replace(/,/g, "");
var num = parseInt(str, 10);
alert(num);

// Now, for decimal places 
var str2 = "18,000.50 USD";
str2 = str2.replace(/,/g, "");
var num2 = parseFloat(str2, 10);
alert(num2);