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[JavaScript] JS array operation summary

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Posted on 6/21/2019 5:21:35 PM | | |
Remove item



Remove multiple items

Note: Arrays of objects cannot be detected using the include method.





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 Landlord| Posted on 6/21/2019 5:21:55 PM |
The includes() method is used to determine whether an array contains a specified value, depending on the case, if it does, it will return true, otherwise false.

Note: Arrays of objects cannot be detected using the include method.

 Landlord| Posted on 6/25/2019 5:14:25 PM |
Array deduplication

let arr = [1,2,3,2,1]
arr = Array.from(new Set(arr)) // [1,2,3]
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