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Andrey Lechev

Andrey Lechev

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My name is Andrey Lechev, but you can call me Leechy. I’m good at HTML, CSS, and JavaScript in the browsers. Not bad at some server stuff like Node.js, SQL, PHP, Python and Parser.

Running promises sequentially

Nov 17, 20203 min read196 views

Today's JavaScript is asynchronous. Like, all of it. If a few years ago, there were a lot of discussions about data transformations. Today's most...

Running promises sequentially

How to copy, delete, or move a document in Firestore

Nov 15, 20206 min read11.5K views

To move a Firestore document from one collection to another, including all existing sub-collections, we will need a Cloud function that copies all...

How to copy, delete, or move a document in Firestore

How to keep `this` pointing to the Stencil component with a DOM event?

Oct 18, 20204 min read552 views

I'm continuing to play with Stencil.js. This time I'm working with forms. One of the main things we can do with any form is submitting the data. And...

How to keep `this` pointing to the Stencil component with a DOM event?

Avoid render of the children in the Stencil.js components

Sep 28, 20202 min read513 views

If you are used to React.js components, you know that you are deciding to show or not the children elements. And if you don't put { children } in your...

Avoid render of the children in the Stencil.js components

Using AVIF as a background image

Sep 11, 20201 min read225 views

Well, you probably already heard that AVIF has landed. If not, click on the link and read. But there is a problem with all these new file formats....

Using AVIF as a background image

Infinite Scroll for Ionic/React

May 17, 20203 min read798 views

On one of the Ionic/React applications, I'm working on, we needed an Infinite Scroll component. Currently, Ionic's ion-infinite-scroll is not...

Infinite Scroll for Ionic/React