This week’s question comes from Thomas, who asks: I disabled the JavaScript just to check the content of my webpage, but unfortunately I could not see any content except the banner H1 tag.

JavaScript’s arrays can hold heterogeneous types, change size on the fly, and readily insert or remove elements. Traditional methods like slice, splice, and push/pop do this by operating on the ...

The initial preview of the Teams JavaScript SDK v2.0 allows you to run apps designed for Teams personal tabs in both desktop and web Outlook and in the Office.com web portal. It brings search ...

When I write pathfinding codes in JavaScript, I ran into this problem: how to empty the array? let a = [1 ... 3] let b = a // empty a and b a.length = 0 console.log('a =', a) console.log('b =', b) ...

When I was coding, there was a situation that if an array has values, it will return true. So I wrote like this `bool = !!array`. But, unexpectedly when `array = []`, `bool` is `false`, not `true`. ## ...