Ctrlk

🔰array-like

JS ⟩ object ⟩ built-in ⟩ Array ⟩ array-like

objects that have indexes and length.

array-likes：
- touchEvent.touches (TouchList)
- the "arguments" object
- String

let arrayLike = { 
  0: "Hello",    // has indexes
  1: "World",
  length: 2,     // has length
}

// ⭐️ string is array-like
const str = 'abc'; 
str.length,       // 3   (string has length)
str[0],           // 'a' (string has numeric indexes)

Last updated 3 years ago