Why Do JavaScript Variables Become 'undefined'? - JavaScript Toolkit
2:52
YouTubeJavaScript Toolkit
Why Do JavaScript Variables Become 'undefined'? - JavaScript Toolkit
Why Do JavaScript Variables Become 'undefined'? Have you ever encountered a variable in JavaScript that suddenly shows up as 'undefined'? In this video, we'll explain the main reasons behind this common issue and how to avoid it. We'll start by discussing what happens when you declare variables with let, const, or var without assigning a value ...
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