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undefined vs not defined in JS 🤔 | Namaste JavaScript Ep. 6
undefined is a special keyword in JavaScript and `undefined !== not defined`. JS is a loosely typed language (weakly typed language). This video covers an in-depth analysis of the undefined keyword and mistakes you should avoid while using this keyword. It is a special keyword in JS and it acts as a placeholder for variables until they are ...
693.1K viewsOct 24, 2020
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