In this video, I'm gonna create a Live Username Checker From a JSON File using Vanilla JavaScript, you can use this widget in your registry or sign-up forms or anywhere you want, you can check that username is available to submit or exists in your database, Now I'm using a JSON file as a database and in my next video I will use a real MySQL database and connect this username field with that, also I show you how to create a PHP and MySQL API to checking username field data with the usernames list in your database
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▶ TABLE OF CONTENTS
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0:00 Introduction & Preview
1:13 HTML
1:52 CSS
3:23 Create JSON File As A Database
3:42 JavaScript
3:46 How To Access Arrays In JavaScript?
6:44 Program Testing
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🤖 LIVE DEMO
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https://saeedkohansal.github.io/JavaS...
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👨💻 SOURCE CODE
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https://github.com/saeedkohansal/Java...
https://jsfiddle.net/gilgeekify/tkm0f...
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