Invite all your Facebook friends (v3)

invite-friends.js

// Scroll to the bottom of the friend list and type the following line in your console

// For checkboxes (e.g. invite to an event)
var c = document.querySelectorAll("a[role='checkbox']"); for (var i = 0; i < c.length; i++) c[i].click();

// For invite buttons (e.g. invite to like a page)
var c = document.querySelectorAll(".uiButton._1sm"); for (var i = 0; i < c.length; i++) c[i].click();