I am looking into structuring vanilla web-components. I have previously used Polymer and like the fact that you can have the template, styles and JavaScript in one file for your component. I want to achieve this with 'vanilla' web components...
I'm trying to detect whether a custom element with a specific name was registered or not. Is there a way to make such check?  Or is there a way to get list of registered custom elements?  I do document.registerElement, but what else is there? Is...
I don't know how to make a disqus comments code to work inside of my custom elements.    Structure of my site:  | index.html --------\ my-app.html (custom element) ----------------\ my-testView1.html (custom element) ----------------\ my-testView...
Using Web Components without any framework, what is the proper way to implement a custom event? For example, say I have a custom element x-pop-out that has a custom event of pop I would want all of the following to work:  <x-pop-out onpop="som...
If I had a script like this  <template id="x-foo-from-template">     <script src="/js/main.js"></script> </template>  <script>     customElements.define('my-header', class extends HTMLElement {...
Due to the renaming of some class methods (attached/detached to connected/disconnected) and removal of createdCallback in favor of constructors (which is a good thing!), I find myself writing my WebComponent base class (class-factory mixin) as follow...
I have defined a custom element and I want to execute a script only when the custom element is upgraded to its registered type. The use case is that I must call a custom method.  My main html file looks like this:  <project-list></project-li...
I have a custom element my-checkbox that wraps a checkbox, label, styling, etc.  When that checkbox is toggled I am defining a CustomEvent named check within my constructor, like so:  constructor(){    super();    this._shadowRoot = this.attachShadow...
I'm just playing around with the custom element functionality in Aurelia and tried to create a 'progress bar' element.  progress-bar.js  import {customElement, bindable} from 'aurelia-framework'; @customElement('progress-bar&#...
This is actually more a question about the object-orientation model in ES6. However I am going to use the creation of a new custom element as an example.  So the new and shiny (as of today) method to create a new custom element is via customElements....

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