what is the difference between undefined and not defined in JavaScript

what is the difference between undefined and not defined in JavaScript

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undefined vs not defined in JavaScript | basic tutorial for beginners 2025 #javascript
undefined vs not defined in JavaScript | basic tutorial for beginners 2025 #javascript
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UNDEFINED vs NOT DEFINED in JavaScript, Simplified

UNDEFINED vs NOT DEFINED in JavaScript, Simplified
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undefined vs not defined in JavaScript | basic tutorial for beginners 2025 #javascript

undefined vs not defined in JavaScript | basic tutorial for beginners 2025 #javascript
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Undefined vs not defined in Js | JavaScript tutorial in Hindi|Javascript Interview question
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What's the difference between undefined and not defined in JavaScript

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Undefined vs Not Defined in Javascript

Undefined vs Not Defined in Javascript
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Javascript Tutorial : Undefined vs Null in JavaScript | Most asked Interview Question