JSFiddle - React, Tailwind, and code Playground

JavaScript

var text = "ui1pu";
var regExParameter = '\d+';
var regEx = '/(.*)' + regExParameter + '(.*)/gi';
var matches = regEx.exec(text);
if(matches && matches[1]) {
    var str1 = matches[1];
    var str2 = matches[2];
    var newStr = str1 + str2
    console.log(newStr);
}



var text = "my1bla";
var matches = /(my)\d+(.*)/gi.exec(text);
if(matches && matches[1]) {
    var str1 = matches[1];
    var str2 = matches[2];
    var newStr = str1 + str2
    console.log(newStr);
}