Odstrániť hodnotu poľa v JavaScripte
Príklady kódu
odobrať prvok z poľa javascript
let numbers = [1,2,3,4]
// to remove last element
let last_num = numbers.pop();
// numbers will now be [1,2,3]
// to remove first element
let first_num = numbers.shift();
//numbers will now be [2,3]
// to remove at an index
let number_index = 1
let index_num = numbers.splice(number_index,1); //removes 1 element at index 1
//numbers will now be [2]
//these methods will modify the numbers array and return the removed elementodstrániť z poľa na základe hodnoty javascript
var index = array.indexOf(item);
if (index !== -1) array.splice(index, 1);ako odstrániť položky z poľa javascript
var array = ["Item", "Item", "Delete me!", "Item"]
array.splice(2,1) // array is now ["Item","Item","Item"]odstrániť prvky z poľa js
const array = [2, 5, 9];
console.log(array);
const index = array.indexOf(5);
if (index > -1) {
array.splice(index, 1);
}
// array = [2, 9]
console.log(array); odstráňte hodnotu pole javascript
var data = [1, 2, 3];
// remove a specific value
// splice(starting index, how many values to remove);
data.splice(1, 1);
// data = [1, 3];
// remove last element
data.pop();
// data = [1, 2];Podobné stránky
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