search in array code example

Example 1: js get array item by property

const jsObjects = [
  {id: 1, displayName: "First"}, 
  {id: 2, displayName: "Second"}, 
  {id: 3, displayName: "Third"}, 
  {id: 4, displayName: "Fourth"}
]

// You can use the arrow function expression:
var result = jsObjects.find(obj => {
	// Returns the object where
	// the given property has some value 
  	return obj.id === 1
})

console.log(result)

// Output: {id: 1, displayName: "First"}

Example 2: array_search in php

<?php
$array = array(0 => 'blue', 1 => 'red', 2 => 'green', 3 => 'red');

$key = array_search('green', $array); // $key = 2;
$key = array_search('red', $array);   // $key = 1;
?>

Example 3: find element in array javascript

const simpleArray = [3, 5, 7, 15];
const objectArray = [{ name: 'John' }, { name: 'Emma' }]

console.log( simpleArray.find(e => e === 7) )
// expected output 7

console.log( simpleArray.find(e => e === 10) )
// expected output undefined

console.log( objectArray.find(e => e.name === 'John') )
// expected output { name: 'John' }

Example 4: js get index of item in array

array.indexOf("item");

Example 5: javascript array.find

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

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

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

Example 6: 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)