js indexof regex
//regular indexof
let a = 'asbdais sbbdias isajdij';
a.indexOf('ias');
// with regex:
let a = 'asbdais sbbdias isajdij';
a.search(/ias/g);
js indexof regex
//regular indexof
let a = 'asbdais sbbdias isajdij';
a.indexOf('ias');
// with regex:
let a = 'asbdais sbbdias isajdij';
a.search(/ias/g);
index of value in array
// for dictionary case use findIndex
var imageList = [
{value: 100},
{value: 200},
{value: 300},
{value: 400},
{value: 500}
];
var index = imageList.findIndex(img => img.value === 200);
get index of element in array js
const beasts = ['ant', 'bison', 'camel', 'duck', 'bison'];
beasts.indexOf('bison'); //ouput: 1
// start from index 2
beasts.indexOf('bison', 2); //output: 4
beasts.indexOf('giraffe'); //output: -1
js array get index
var fruits = ["Banana", "Orange", "Apple", "Mango"];
return fruits.indexOf("Apple"); // Returns 2
javasript array indexof
var array = [2, 9, 9];
array.indexOf(2); // 0
array.indexOf(7); // -1
array.indexOf(9, 2); // 2
array.indexOf(2, -1); // -1
array.indexOf(2, -3); // 0
JavaScript Array Methods indexOf()
let days = ['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday'];
console.log(days.indexOf('Sunday'));
// --> -1, mert nem található meg
let days = ['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday'];
console.log(days.indexOf('Monday'));
// --> 0
Copyright © 2021 Codeinu
Forgot your account's password or having trouble logging into your Account? Don't worry, we'll help you to get back your account. Enter your email address and we'll send you a recovery link to reset your password. If you are experiencing problems resetting your password contact us