Get Engagement Ratio of your Publications in Facebook

engagementRatio.js

// Copy & Paste this into your console using F12 in this page:
// https://www.facebook.com/yourFacebookPage/insights/?section=navPosts
// It console.table you your best posts sorted by Engagement Ratio

const pubs = document.querySelectorAll('._5kn3.ellipsis');
const title = document.querySelectorAll("._5591");
const date = document.querySelectorAll('._5k4c > :first-child');

titles = [];
title.forEach(item => titles.push(item.innerText));

dates = [];
date.forEach(item => dates.push(item.innerText));

let values = [];
let ratio = [];

pubs.forEach(e => values.push(e.innerText));
for (var i=0; i=values.length/3;i++){
	a = values.splice(0,3)
	ratio.push(a)
}

ratio = ratio
  .map(arr => arr.map(item => ((item.slice(-1) == "K") ? (item = item.slice(0,-1).replace(",","."), item = Number(item)*1000) : Number(item))))
  .map(i => (i[1]+i[2])/i[0]*100)

let engagementRatio = ratio.map(function (e, i) {
    return [titles[i],dates[i], e];
});

engagementRatio.sort(function(a, b) { 
    return a[2] > b[2] ? -1 : 1;
});

console.table(engagementRatio)