JSFiddle - React, Tailwind, and code Playground
JavaScript
var objURL = new URL('http://192.168.6.1/Images/regrgrger54654654.png')
console.log(objURL.origin)
var url = 'http://192.168.6.1/Images/regrgrger54654654.png'
console.log(url.match(/https?:\/{2}[^\/]*/)[0])