签入数组 ids 等于派发 id 值

Question

I create an array of ids value mapping an existing array

const ids = array.map(item => ({ id: item.homologationId }));

This is the result

ids =[{ "id": "15079"},{"id": "15079"},{"id": "15079"},{"id": "15079"},]

From here i want to check if for each item of the ids array the id values are the same ( like in this example ) i want to dispatch in the store the id value (dispatch(setIdValue(value));

How can i do this check?

Answer 1

You're looking for the .every() Javascript Array method.

Something like this will do the trick.

const ids = array.map(item => ({ id: item.homologationId }));
const [head] = ids
if (head && ids.every(item => item.id == head.id)) {
    dispatch(setIdValue(head.id))
}

Answer 2

I would use every function to check the equality of the ids, this function returns true if the all the elements in an iterable fulfills a condition.

 const ids =[{ "id": "15079"},{"id": "15079"},{"id": "15079"},{"id": "15079"}] const element = ids.at(0); if(ids.every(x => x.id === element.id)) { console.log("All the elements are equals") } else { console.log("Not all the elements are equals") }