r/learnjavascript • u/pmz • Apr 22 '20

14 Fundamental JavaScript Concepts Explained Simply - Dotted Squirrel

https://dottedsquirrel.com/javascript/fundamentals/
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14

u/DilatedTeachers Apr 23 '20

A few of thoughts. Mainly about the graphic; most could also be applied to the article:

  • Lack of const

  • = is hard to read

  • missed the s in "is case sEnEtiVe"

  • multiline arrow functions: returns are not required - e.g. you could be mutating data outside the function

  • no strict equals in comparisons section

  • the & and | operators are bitwise, and generally aren't used. && And || are the one's you probably mean?

1

u/justingolden21 Apr 23 '20

What about negative infinity, not just positive? Also triple equals === seems worth mentioning in that category. I also feel that you should mention that & and friends are bitwise operations, while && and friends are logical operators.

Overall nice read.

0

u/[deleted] Apr 23 '20

[deleted]

2

u/Montuckian Apr 23 '20

Definitely a good point and you can take it a step further:

Everything that's not a primitive (number, string, boolean, undefined, null) is an object in JS.