thanks for your help.
there is no tokens or key words required.
and it is still not works.
will try to fix my troubles with fonts that i had before and will check again.
happy holidays !
Hi!
There is a mistake in the lesson which should be fixed : " 1. A single line comment will COMMENT OUT a single line and is denoted with two forward slashes // preceding it. :
// Prints 5 to the console
console.log(5);"
There is a mismatch between example and explanation since example is about commenting while explanation is about commenting out.
There is very confusing when you a total beginner.
Can someone please clarify the difference between the two data types in JS null and undefined. As far as I know undefined is some number divided by zero. Please give more clarification. These terms seems ambiguous. Thank you…
Division by zero is undefined because zero is undefined. JS calls this infinity. That’s a math concern.
undefined is when a variable has no defined value.
let a;
console.log(a) // undefined
It is also the case when a function has no return value, such as, console.log(). When JS is asked to evaluate the return it gives, undefined.
console.log(console.log()) // undefined
undefined is not an object.
null on the other hand is an object. It is the top of the prototype chain, although it has no prototype of its own, and no attributes. It is the only thing above Object, from which everything else is derived.
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