JAVASCRIPT

javascrpt find index

const numbers = [2, 4, 5, 3, 8, 9, 11, 33, 44];
const findIndex = numbers.findIndex((number) => number == 5);
console.log(findIndex)
//Expected output: 2

how to find the index of a value in an array in javascript

var list = ["apple","banana","orange"]

var index_of_apple = list.indexOf("apple") // 0

get index of item array

const array = ['a', 'b', 'c']
array.indexOf('a')
 > 0

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);

js find index in list

let myList = ['foo', 'bar', 'qux'];

myList.indexOf('bar');	// 1

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

find index in array javascript

// find index of array in javascript
const number = [1,6,2,8,1,0,4,2,7,5,4,1];
const index = number.findIndex(item => item === 8);
console.log(index)

js array get index

var fruits = ["Banana", "Orange", "Apple", "Mango"];
return fruits.indexOf("Apple"); // Returns 2

javascript array findindex

// find index of array item; test values using a function
const arr = ['A','B','C'];
const index = arr.findIndex((item) => item === 'B');	// index == 1

js get index of item in array

array.indexOf("item");

Find the index of an item in the Array

fruits.push('Mango')
// ["Strawberry", "Banana", "Mango"]

let pos = fruits.indexOf('Banana')
// 1

javascript find index

const index = array.findIndex((param)=> param.name == "jimmy")
/* param will iterate on every value of the array looking for 
that one element that fits the criteria that is indicated in arrow function 
besides it */

access index of array javascript

let first = fruits[0]
// Apple

let last = fruits[fruits.length - 1]
// Banana

get item in array from index

var valueAtIndex1 = myValues[1];

Find Index in Array

$scope.indexOfField = function(fieldId) {
    var fieldData = $scope.model.fieldData, 
        i = 0, ii = $scope.model.fieldData.length;
    for(i; i < ii; i++) if(fieldData[i].Id === fieldId) break;
    // use i
}