javascript-playgrounds/array_functions.html at master · piyalidas10/javascript-playgrounds · GitHub

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<!DOCTYPE html>

<html>

<head>

<title>Array Functions</title>

</head>

<body>

<h2>Array Functions</h2>

let userArr = [

{id: '001', name:'Ram', email:'ram@gmail.com', age:23, gender: 1},

{id: '002', name:'Ketty', email:'ketty23@gmail.com', age:41, gender: 2},

{id: '003', name:'John', email:'john@gmail.com', age:33, gender: 1},

{id: '004', name:'Kat', email:'kat32@gmail.com', age:28, gender: 2}

];

let genderArr = [

{id: 1, title: 'Male'},

{id: 2, title: 'Female'}

];

// Change email is whose name is "John"

userArr.map(ele => {

if(ele.name === 'John') {

ele.email = 'john@yahoo.com'

}

});

console.log('userArr => ', userArr);

// Get the names. It will return array

names = userArr.map(ele => ele.name);

console.log('names => ', names);

// Get the details whose age > 30. It will return array

ageDetails = userArr.filter(ele => ele.age > 30);

console.log('ageDetails => ', ageDetails);

/* Check from user array if name with "Ram" is exist or not using map and includes

includes function always return true/false */

// isPresent = userArr.map(ele => ele.name).includes('Ram');

isPresent = userArr.find(ele => ele.name === 'Ram')

console.log('isPresent => ', isPresent);

// Get user info whose name is 'Ram' using filter. It will return array

singleUser = userArr.filter(ele => ele.name === 'Ram');

console.log('singleUser => ', singleUser);

// Add position field in user array. If user age is geater than 30, add senior otherwise junior

userArr.forEach(ele => {

ele.age > 30 ? Object.assign(ele, {position: 'Senior'}) : Object.assign(ele, {position: 'Junior'})

});

console.log('userArr => ', userArr);

// Print the use info whose age is less than 30 and add new field position with "Junior" value

filterArr = userArr.filter(ele => ele.age < 30).map(ele => Object.assign(ele, {position: 'Junior'}));

console.log('filterArr => ', filterArr);

// Print the user info whose gender is "Female"

getId = genderArr.filter(ele => ele.title === 'Female').map(ele => ele.id);

console.log('getId => ', getId, ...getId);

femaleUsers = userArr.filter(ele => ele.gender === getId[0]);

console.log('femaleUsers => ', femaleUsers);

</script>

</body>

</html>

javascript-playgrounds/array_functions.html at master · piyalidas10/javascript-playgrounds · GitHub

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