How to randomly extract several array elements from an array in JS

How to randomly remove an element or several elements from an array in JS.

If the array is

var items = ['1','2','4','5','6','7','8','9','10'];

1. Randomly remove an element from the array items

var item = items[Math.floor(Math.random()*items.length)];

2. Randomly select several elements from the previous random array

function getRandomArrayElements(arr, count) {
var shuffled = arr.slice(0), i = arr.length, min = i - count, temp, index;
while (i-- > min) {
index = Math.floor((i + 1) * Math.random());
temp = shuffled[index];
shuffled[index] = shuffled[i];
shuffled[i] = temp;
}
return shuffled.slice(min);
}
var items = ['1','2','4','5','6','7','8','9','10'];
console.log( getRandomArrayElements(items, 4) );

The above is the JS method that the editor introduces to you to randomly extract several array elements. I hope it will be helpful to you. If you have any questions, please leave me a message and the editor will reply to you in time. I would also like to thank you all for your support of the PHP Chinese website!

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