JSFiddle - React, Tailwind, and code Playground

CSS

.ex-backgroundimage {
    position: relative;
}

.ex-backgroundimage > .ex-backgroundimage-image {
    background-repeat: no-repeat;
    background-position: center center;
    opacity: 0.5;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    position: absolute;
    z-index: -1;
}

JavaScript

var string = "c92f19fe-5c7d-4d60-e805-c8e3038e25d9";
var result = string.search(/^[a-f,0-9]{8}-[a-f,0-9]{4}-[a-f,0-9]{4}-[a-f,0-9]{4}-[a-f,0-9]{12}/);
console.log("test-");