26 lines
1.1 KiB
Markdown
26 lines
1.1 KiB
Markdown
---
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title: Filtering
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tags: [webdev, javascript]
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category: programming
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---
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I was watching the video [How To Create A Search Bar In JavaScript](https://www.youtube.com/watch?v=TlP5WIxVirU) by [Web Dev Simplified](https://www.youtube.com/channel/UCFbNIlppjAuEX4znoulh0Cw) to learn how to do a search bar in JavaScript.
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What I realised as I was coding along, was that the video was reallymore about filtering data than what I might think of as a search bar. Which is fine, and totally not wrong, but I do find some of Kyle's choices suspect / curious.
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For instance he uses data attributes for selecting elements from the html, and runs `toLowerCase()` on strings every single time you type a character. The latter to my mind seems incredibly wasteful.
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```javascript
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searchInput.addEventListener("input", (event) => {
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const value = event.target.value.toLowerCase();
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users.forEach((user) => {
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const isVisible =
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user.name.toLowerCase().includes(value) ||
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user.email.toLowerCase().includes(value);
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user.element.classList.toggle("hide", !isVisible);
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});
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});
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```
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