How do I inject certain files into certain websites from a chrome extension

Question

In my chrome extension I have multiple files that inject script into websites, I want to know how I can inject 1 file for a certain website. To better explain

My chr

Answer 1

Use the Tampermonkey / Greasemonkey extensions, with the header like that:

// ==UserScript==
// @name         MTV Statistical Data For Tampermonkey & Greasemonkey
// @namespace    MTV_statistical_data
// @include     /^https?://(www\.)?mytrafficvalue\.com/shareholders\.html(\#marketplace)?$/
// @author       facebook.com/igor39
// @version      7.5
// @grant        none
// @description  Improving the user experience & provide more of statistics on the page www.mytrafficvalue.com/shareholders.html
// ==/UserScript==

Example: http://pastebin.com/Z4zq2h6Q