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JavaScript - copy array with remove item operation
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In this article, we would like to show you how to copy an array with removed item using JavaScript.
Quick solution:
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var array = [1, 2, 3, 4];2
var index = 1;3
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var result = array.filter((value, i) => i !== index);5
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console.log(result); // [ 1, 3, 4 ]
In this example, we create a reusable function that creates a copy of a given array with an item removed by the index.
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function removeItem(array, index) {2
return array.filter((value, i) => i !== index);3
}4
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// Usage example:7
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var array = [1, 2, 3, 4];9
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var copy1 = removeItem(array, 0);11
var copy2 = removeItem(array, 1);12
var copy3 = removeItem(array, 2);13
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console.log(copy1); // [ 2, 3, 4 ]15
console.log(copy2); // [ 1, 3, 4 ]16
console.log(copy3); // [ 1, 2, 4 ]
