Ako odstrániť položku z poľa v JavaScripte
Príklady kódu
odstráňte konkrétny prvok z poľa
var colors = ["red","blue","car","green"];
var carIndex = colors.indexOf("car");//get "car" index
//remove car from the colors array
colors.splice(carIndex, 1); // colors = ["red","blue","green"]ako odstrániť prvok z poľa v JavaScripte
var data = [1, 2, 3];
// remove a specific value
// splice(starting index, how many values to remove);
data = data.splice(1, 1);
// data = [1, 3];
// remove last element
data = data.pop();
// data = [1, 2];odstráňte prvok z poľa
var colors = ["red", "blue", "car","green"];
// op1: with direct arrow function
colors = colors.filter(data => data != "car");
// op2: with function return value
colors = colors.filter(function(data) { return data != "car"});ako odstrániť položku z poľa v JavaScripte
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); odstrániť elemtns z poľa so spojením
var fruits = ["Banana", "Orange", "Apple", "Mango", "Kiwi"];
document.getElementById("demo").innerHTML = fruits;
function myFunction() {
fruits.splice(2, 2);
document.getElementById("demo").innerHTML = fruits;
}Podobné stránky
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