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array.splice(start, deleteCount, ...items)

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const arr = [1, 2, 3, 4, 5];
arr.splice(2, 1); // ɾ³ýµÚ3ÏË÷ÒýΪ2£©
console.log(arr); // Êä³ö£º[1, 2, 4, 5]

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array.filter(callback(currentValue, index, array))

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const arr = [1, 2, 3, 4, 5];
const newArr = arr.filter((item) => item !== 3); // ɨ³ýֵΪ3µÄÏî
console.log(newArr); // Êä³ö£º[1, 2, 4, 5]

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const newArr = arr.slice(0, start).concat(arr.slice(end + 1));

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end£ºÒª×èÖ¹¸´ÖƵÄË÷Òý

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const arr = [1, 2, 3, 4, 5];
const newArr = arr.slice(0, 2).concat(arr.slice(3)); // ɾ³ýµÚ3ÏË÷ÒýΪ2£©
console.log(newArr); // Êä³ö£º[1, 2, 4, 5]

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