How to remove the all elements from Array in React

Question

I have the array with ids

const [selected, setSelected] = React.useState<readonly string[]>([]);
var selectedId = props.selectedId;

When clicking on the clean button I have added a useState() which check the given selectedId has a value or not If selectedId has a value then add a value in array, if not then remove all the elements from the array

useEffect(() => {
        if (selectedId != undefined) {  
            // Add selectedId in selectedIdsList
            setSelected(selectedId)
        } else {
            // remove all elements from setSelected
        }
    }, [selectedId]);

How to delete all elements from array

to delete or empty an array do something like this selectedIdsList = [] but since you are using state you can set it something like this = setSelected([]) — Vishal Beep
– Vishal Beep, Commented Oct 19, 2022 at 13:08

Vishal Beep · Accepted Answer · 2022-10-19 13:18:01Z

2

To delete all elements inside array or empty an array we can do something like this selectedIdsList = [] but since you are using state you can set it something like this

 setSelected([]);

answered Oct 19, 2022 at 13:18

Vishal Beep

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Tzili Mentzer · Accepted Answer · 2022-10-19 13:13:47Z

0

You can reassign the array to an empty array selectedIdsList = []

answered Oct 19, 2022 at 13:13

Tzili Mentzer

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Dmitriy Glazkov · Accepted Answer · 2022-10-19 13:15:31Z

0

you should write setSelected([])

answered Oct 19, 2022 at 13:15

Dmitriy Glazkov

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