measurement-framework/lib/helpers/listen.js

Collection of Javascript code to implement a browser based measurement system for websites. It uses a cookie to store a users action on a webpage and let you map thoose actions to a particular state in the user journey.

import window from "window"

function listen(event, callback) {
    if (window.addEventListener) {
        window.addEventListener(event, callback)
    } else if (window.attachEvent) {
        window.attachEvent('on' + event, callback)
    }
}

export default listen