Basic JavaScript (6/111) | Understanding Uninitialized Variables | freeCodeCamp

Published: 09 July 2020
on channel: Stral Tech

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Basic JavaScript (6/111) | Understanding Uninitialized Variables | freeCodeCamp

Full playlist 👉 • Basic JavaScript (1/111) | Comment Yo...

"When JavaScript variables are declared, they have an initial value of undefined. If you do a mathematical operation on an undefined variable your result will be NaN which means "Not a Number". If you concatenate a string with an undefined variable, you will get a literal string of "undefined".

Initialize the three variables a, b, and c with 5, 10, and "I am a" respectively so that they will not be undefined."

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