JS Practice — Built-in Objects

Array.prototype.shift() — consume the first word

📖 Usage Example

const words = ['hello', 'world', 'foo']
const head = words.shift()  // → 'hello'
words  // → ['world', 'foo']

Use shift() to consume the first element of a word or message queue.

shift() as "consume first"

Use shift() to consume and process the first element of a list one at a time — a common pattern in command parsing or token processing.

const words = ['hello', 'world']
const first = words.shift() // 'hello', words === ['world']

💡 Hints (2)