Inject mithril to webpage

download.js

//press F12 to open chrome dev tools
//then add mithril to header
var mt = document.createElement('script');
mt.src = "https://unpkg.com/mithril/mithril.js";
document.getElementsByTagName('head')[0].appendChild(mt);

//test render
m.render(document.body,"Hello");

//let create link and click
m.render(document.body,m("a#link",{href:"https://dab1nmslvvntp.cloudfront.net/wp-content/uploads/2016/02/1454335918es6-arrow-functions-new-fat-and-concise-syntax-in-js05-no-parameters.png"},"click"))
var l = document.getElementById("link")
l.click()