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Basic JavaScript 6111 Understanding Uninitialized Variables freeCodeCamp
>> YOUR LINK HERE: ___ http://youtube.com/watch?v=xbv72iYAcr0
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. • https://www.freecodecamp.org/learn/
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