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Front-end

[React.js] Uncaught TypeError: Cannot read properties of undefined (reading 'map')
About Error When I execute this react code, <div id={id} className="row__posters"> {movies.length > 0 ? ( movies.map((movie) => { return ( <SwiperSlide> <img key={movie.id} style={{ padding: "25px...
Nov 17, 20241 min read7
[React.js] Error: GH013: Repository rule violations found
About Error This error occurred when I git push -u origin main to push my commits. The reason was because I wrote personal access token in the index.html file. I copied and pasted on there because it’s something I can never remember, but I will need...
Nov 13, 20241 min read222
[JavaScript] Pure Function for Clean Code
Introduction in this article, I will be talking about pure vs impure function, and why it is a good practice to always try to use pure function if we can. A pure function does not only exist in JavaScript. You can adopt this in almost every programmi...
Oct 25, 20232 min read8
[JavaScript] Intermediately Invoked Function Expression (IIFE)
Introduction In this article, I will be talking about Intermediately Invoked Function Expression (IIFE), and why we need an IIFE. IIFE Syntax Normally, we use a function like this in JavaScript: // function declaration function add(a, b) { retur...
Oct 24, 20233 min read10
[JavaScript] Deep Dive Into Event Loop - How JavaScript Works
Introduction In this article, I will talk about call stack, call back queue, web APIs and event loop. After reading this article, you should be able to think how javascript runs in your head. This website is really helpful to understand and visualize...
Oct 23, 20234 min read11
[JavaScript] Understanding Event Capturing, Bubbling, Delegation
Introduction In this article, I will be talking about how the browser detects that there is an event. The standard DOM Events describes 3 phases of event propagation: Capturing phase - The event goes down from top to bottom Target phase - reaches t...
Oct 22, 20234 min read30

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