js & array remove one item ways
// array remove one item ways
let keys = [1,2,3,4,5,6,7];
let key = 3;
// keys.remove(key); ???
let index = keys.indexOf(key);
// keys = keys.splice(index, 1);
// keys = keys.slice(index, index + 1);
keys = keys.filter(icon => icon !== key);
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/filter
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/Reduce
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/slice
let animals = ['ant', 'bison', 'camel', 'duck', 'elephant'];
console.log(animals.slice(4, 5));
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/splice
let months = ['Jan', 'March', 'April', 'June'];
// remove one
months.splice(2, 1);
console.log(months);
// expected output: Array ['Jan', 'March', 'June']
https://www.cnblogs.com/xgqfrms/p/11039499.html