Count all videos time duration on youtube channel

CountYoutubeVideosTime.js

//You need to run this in javascript console inside chrome

//Assumptions:
//1. Will count only "expanded" videos on page, you may first need to run script to scroll to last video or do it manually
//2. Tested on chrome, ubuntu, 2019
//3. Time format:   hh:mm:ss

// Assuming you have your domlists as an array-like object
const domlists = document.querySelectorAll("ytd-rich-item-renderer");

var allHours = 0;
var allMinutes = 0;
var allSeconds = 0;

// Loop through each element in domlists
domlists.forEach(element => {
// Find the child element with <span> tag and the specified className
const childElement = element.querySelector("span.style-scope.ytd-thumbnail-overlay-time-status-renderer");

    var splitedTime = childElement.textContent.split(":");

    if (splitedTime.length == 1) {
    	allSeconds += +splitedTime[0];
    } else if (splitedTime.length == 2) {
    	allMinutes += +splitedTime[0];
    	allSeconds += +splitedTime[1];

    } else if (splitedTime.length == 3) {
    	allHours += +splitedTime[0];
    	allMinutes += +splitedTime[1];
    	allSeconds += +splitedTime[2];
    } else {
    	console.log("WTF error, current content:", content);
    }

});

var totalTimeSeconds = allHours * 3600 + allMinutes * 60 + allSeconds;

var seconds = totalTimeSeconds % 60;
var minutes = ~~(totalTimeSeconds / 60) % 60;
var hours = ~~(totalTimeSeconds / 3600);

// console.log("allHours:", allHours);

// console.log("allMinutes:", allMinutes);

// console.log("allSeconds:", allSeconds);

console.log("Hours:", hours);

console.log("Minutes:", minutes);

console.log("Seconds:", seconds);

//comments leaved for future fast debugging in case of errors, I know, bad practice
//Example page: https://www.youtube.com/user/DNewsChannel/videos