1. Arrays Are Not Equal
Despite having identical elements, two distinct arrays are not considered equal in JavaScript:
The reason is the same as above: == and === compare object references for arrays, and these two arrays are different objects in memory.
2. NaN Is a Number
NaN, which stands for "Not a Number," is ironically classified as a number:
NaN is a special numeric value that indicates that a result cannot be represented as a number. It’s the only value in JavaScript that is not equal to itself.
3. Arrays and Objects
When you try to add arrays or objects, you can get some strange results due to type coercion:
The plus operator triggers the default conversion to strings for both arrays and objects, leading to these odd outcomes.
4. Boolean Maths
Even booleans aren't safe from JavaScript’s quirks:
In arithmetic operations, true is converted to 1 and false to 0. Therefore, `
Part 1: https://www.buymeacoffee.com/codecrumbs/the-weird-side-javascript-explained-part-1
Original post: https://www.instagram.com/p/C1KUenOsCU9/?utm_source=ig_web_copy_link&igsh=MzRlODBiNWFlZA==