Rubén_ic Rubén_ic - 1 year ago 117
Javascript Question

DOMContentLoaded not working like $(document).ready() in a simple scenario

On the main file of my webpack assets bundle for an Angular2 app, I'm not being able to listen for the


The file just has the following lines:

// styles
const bootstrapLoader = require('bootstrap-loader');
const styleScss = require('./main.scss');
// scripts
const $ = require('jquery');
const jQueryUjs = require('jquery-ujs');
const coreJS = require('core-js');
const zoneJS = require('zone.js');
const reflectMetadata = require('reflect-metadata');
const myAngularApp = require('./main.ts');

document.addEventListener('DOMContentLoaded', function () {

On the other hand, if I use jQuery, it works perfectly, id est, changing the last three lines with the following ones:

$(document).ready(function() {

This looks so basic, but I don't understand why the plain javascript version of the document ready is not working here...

Many thanks!

Answer Source

It's not the same

Most browsers provide similar functionality in the form of a DOMContentLoaded event. However, jQuery's .ready() method differs in an important and useful way: If the DOM becomes ready and the browser fires DOMContentLoaded before the code calls .ready( handler ), the function handler will still be executed. In contrast, a DOMContentLoaded event listener added after the event fires is never executed.

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