Answers for "search array for value"

javascript find

const inventory = [
  {name: 'apples', quantity: 2},
  {name: 'cherries', quantity: 8}
  {name: 'bananas', quantity: 0},
  {name: 'cherries', quantity: 5}
  {name: 'cherries', quantity: 15}
  
];

const result = inventory.find( ({ name }) => name === 'cherries' );

console.log(result) // { name: 'cherries', quantity: 5 }

javascript element in array

var fruits = ["Banana", "Orange", "Apple", "Mango"];

var n = fruits.includes("Mango");

javascript array.find

const array1 = [5, 12, 8, 130, 44];

const found = array1.find(element => element > 10);

console.log(found);
// expected output: 12

function search in javascript array

// function to search array using for loop
function findInArray(ar, val) {
    for (var i = 0,len = ar.length; i < len; i++) {
        if ( ar[i] === val ) { // strict equality test
            return i;
        }
    }
    return -1;
}

// example array
var ar = ['Rudi', 'Morie', 'Halo', 'Miki', 'Mittens', 'Pumpkin'];
// test the function 
alert( findInArray(ar, 'Rudi') ); // 0 (found at first element)
alert( findInArray(ar, 'Coco') ); // -1 (not found)

array search

/*
  Arrays Methods [Search]
  - indexOf(Search Element, From Index [Opt])
  - lastIndexOf(Search Element, From Index [Opt])
  - includes(valueToFind, fromIndex [Opt]) [ES7]
*/

let myFriends = ["Ahmed", "Mohamed", "Sayed", "Alaa", "Ahmed"];

console.log(myFriends);

console.log(myFriends.indexOf("Ahmed"));
console.log(myFriends.indexOf("Ahmed", 2));

console.log(myFriends.lastIndexOf("Ahmed"));
console.log(myFriends.lastIndexOf("Ahmed", -2));

console.log(myFriends.includes("Ahmed"));
console.log(myFriends.includes("Ahmed", 2));

if (myFriends.lastIndexOf("Osama") === -1) {
  console.log("Not Found");
}

console.log(myFriends.indexOf("Osama"));
console.log(myFriends.lastIndexOf("Osama"));

js to find value in array

console.log( simpleArray.find(e => e === 7) )