JS: CLI fun using javascript and Browser dev tools

LayoutChecker.js

// https://www.sitepoint.com/command-line-api-fun-profit/
// Debug the webpage and check that if the layout is as per desire or not.
[].forEach.call($$("*"),function(a){a.style.outline="1px solid #"+(~~(Math.random()*(1<<24))).toString(16)});

// Extract all the image sources of a web site
var pics = $$("img");
// var pics = $$("img.-cx-PRIVATE-Photo__image"); // instagram images
for (pic in pics) {
  console.log(pics[pic].src);
}