🔰accessing elements

JS ⟩ object ⟩ built-in ⟩ Array ⟩ accessing arrays

arr.push(value)    // append element
arr.pop()          // removes and returns last element
arr.unshift(value) // prepend element
arr.shift()        // removes and returns first element

delete a[1]        // delete element

//                             ┌────────┐ <--- elements to add
arr.splice(index, deleteCount, v1, v2, v3)
//           └── start index to delete/insert elements

⭐️ 重點

array elements can be deleted with the delete operator.

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