JavaScript: Sort the specified array of objects by title value
JavaScript Array: Exercise-25 with Solution
Write a JavaScript function to sort the following array of objects by title value.
Sample object:
var library = [ { author: 'Bill Gates', title: 'The Road Ahead', libraryID: 1254}, { author: 'Steve Jobs', title: 'Walter Isaacson', libraryID: 4264}, { author: 'Suzanne Collins', title: 'Mockingjay: The Final Book of The Hunger Games', libraryID: 3245} ];
Pictorial Presentation:
Sample Solution:
HTML Code:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Write a JavaScript function to sort an lowing array of objects by title value.</title>
</head>
<body>
</body>
</html>
JavaScript Code:
var library = [
{ author: 'Bill Gates', title: 'The Road Ahead', libraryID: 1254},
{ author: 'Steve Jobs', title: 'Walter Isaacson', libraryID: 4264},
{ author: 'Suzanne Collins', title: 'Mockingjay: The Final Book of The Hunger Games', libraryID: 3245}
];
function compare_to_sort(x,y)
{
if (x.title < y.title)
return -1;
if (x.title > y.title)
return 1;
return 0;
}
console.log(library.sort(compare_to_sort));
Sample Output:
[{"author":"Suzanne Collins","title":"Mockingjay: The Final Book of The Hunger Games","libraryID":3245},{"author":"Bill Gates","title":"The Road Ahead","libraryID":1254},{"author":"Steve Jobs","title":"Walter Isaacson","libraryID":4264}]
Flowchart:
ES6 Version:
const library = [
{ author: 'Bill Gates', title: 'The Road Ahead', libraryID: 1254},
{ author: 'Steve Jobs', title: 'Walter Isaacson', libraryID: 4264},
{ author: 'Suzanne Collins', title: 'Mockingjay: The Final Book of The Hunger Games', libraryID: 3245}
];
function compare_to_sort(x,y)
{
if (x.title < y.title)
return -1;
if (x.title > y.title)
return 1;
return 0;
}
console.log(library.sort(compare_to_sort));
Live Demo:
See the Pen JavaScript - Sort the specified array of objects by title value - array-ex- 25 by w3resource (@w3resource) on CodePen.
Improve this sample solution and post your code through Disqus
Previous: Write a JavaScript function to remove. 'null', '0', '""', 'false', 'undefined' and 'NaN' values from an array.
Next: Write a JavaScript program to find a pair of elements (indices of the two numbers) from an given array whose sum equals a specific target number.
What is the difficulty level of this exercise?
Test your Programming skills with w3resource's quiz.
JavaScript: Tips of the Day
How to insert an item into an array at a specific index (JavaScript)?
What you want is the splice function on the native array object.
arr.splice(index, 0, item); will insert item into arr at the specified index (deleting 0 items first, that is, it's just an insert). In this example we will create an array and add an element to it into index 2:
var arr = []; arr[0] = "Jani"; arr[1] = "Hege"; arr[2] = "Stale"; arr[3] = "Kai Jim"; arr[4] = "Borge"; console.log(arr.join()); arr.splice(2, 0, "Lene"); console.log(arr.join());
Ref: https://bit.ly/2BXbp04
- New Content published on w3resource:
- HTML-CSS Practical: Exercises, Practice, Solution
- Java Regular Expression: Exercises, Practice, Solution
- Scala Programming Exercises, Practice, Solution
- Python Itertools exercises
- Python Numpy exercises
- Python GeoPy Package exercises
- Python Pandas exercises
- Python nltk exercises
- Python BeautifulSoup exercises
- Form Template
- Composer - PHP Package Manager
- PHPUnit - PHP Testing
- Laravel - PHP Framework
- Angular - JavaScript Framework
- Vue - JavaScript Framework
- Jest - JavaScript Testing Framework