find element in object javascript code example

Example 1: javascript find item in array of objects

var __POSTS = [ 
	{ id: 1, title: 'Apple', description: 'Description of post 1' }, 
	{ id: 2, title: 'Orange', description: 'Description of post 2' }, 
	{ id: 3, title: 'Guava', description: 'Description of post 3' }, 
	{ id: 4, title: 'Banana', description: 'Description of post 4' }
];

var __FOUND = __POSTS.find(function(post, index) {
	if(post.title == 'Guava')
		return true;
});

// On success __FOUND will contain the complete element (an object)
// On failure it will contain undefined  
console.log(__FOUND); // { id: 3, title: 'Guava', description: 'Description of post 3' }

Example 2: js find value in array

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

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

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

Example 3: find typescript

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

function findCherries(fruit) { 
    return fruit.name === 'cherries';
}

inventory.find(findCherries); // { name: 'cherries', quantity: 5 }

/* OR */
  inventory.filter(x => x.name === 'bananas')[0]; // { name: 'bananas', quantity:0}  

/* OR */

inventory.find(e => e.name === 'apples'); // { name: 'apples', quantity: 2 }

Example 4: object find javascript

function isBigEnough(element) {
  return element >= 15;
}

[12, 5, 8, 130, 44].find(isBigEnough); // 130

Example 5: find in js

The first element that will be found by that function
const f = array1.find(e => e > 10);