如何按顺序从数组中获取元素？

Question

My question seems to you to be easy and stupid, but I was able to solve it myself.

I have array x :

let x = [
    {"ID":"123456"},
    {"ID":"789456"},
    {"ID":"303099"},
    {"ID":"300446"},
    {"ID":"300234"}
];

And There is the variable y that randomly takes elements from an array:

let y = x[Math.floor(Math.random() * x.length)];

Then I use y in another function.

Now I need to sequentially take the elements from the array (first x[0], x[1], etc.) and pass them to another function.

That is, i need a similar variable like y , which will pass the array elements sequentially.

How can this be implemented? through the counter?

Thank you for any help.

Answer 1

Create a copy and use Array.shift to extract the elements from that in a loop:

 let x = [ {"ID":"123456"}, {"ID":"789456"}, {"ID":"303099"}, {"ID":"300446"}, {"ID":"300234"} ]; // create a copy let copy = [...x]; // loop it while(copy.length) { const x = copy.shift(); doSomethingWithX(x); console.log(`[copy] now ${JSON.stringify(copy)}`); } function doSomethingWithX(x) { console.log(`Here's [x.ID] for you ${x.ID}`) }

Answer 2

for (const el of x) {
  yourFunction(el);
}