21 lines
689 B
JavaScript
21 lines
689 B
JavaScript
let cats = ['Bob', 'Willy', 'Mini'];
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// pop(): Remove an item from the end of an array
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// pop() returns the removed item
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cats.pop(); // ['Bob', 'Willy']
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// push(): Add items to the end of an array
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// push() returns the new array length
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cats.push('Mini'); // ['Bob', 'Willy', 'Mini']
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// shift(): Remove an item from the beginning of an array
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// shift() returns the removed item
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cats.shift(); // ['Willy', 'Mini']
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// unshift(): Add items to the beginning of an array
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// unshift() returns the new array length.
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cats.unshift('Puff', 'George'); // ['Puff', 'George', 'Willy', 'Mini']
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// Генерирует массив чисел
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Array.from({length: 4}, (_, i) => i + 1) // [1, 2, 3, 4]
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