Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Process JavaScript Nested Array and Display Order of Numbers
Suppose, we have a nested array of numbers like this −
const arr = [23, 6, [2,[6,2,1,2], 2], 5, 2];
We are required to write a program that should print the numbers (elements) of this array to the screen.
The printing order of the numbers should according to the level upto which they are nested.Therefore, the output for the above input should look like this −
23 6 2 6 2 1 2 2 5 2
Example
The code for this will be −
<!DOCTYPE html>
<html>
<head>
<meta charset="utf−8">
<meta name="viewport" content="width=device−width">
<title>PATTERN</title>
</head>
<body>
<script>
const arr = [23, 6, [2, [6, 2, 1, 2], 2], 5, 2];
arr.reduce(function iter(level) {
return function (node, item) {
var pTag = document.createElement('p');
pTag.style.marginLeft = level + 'px';
node.appendChild(pTag);
if (Array.isArray(item)) {
item.reduce(iter(level || 50), pTag);
} else {
pTag.appendChild(document.createTextNode(item));
}
return node;
};
}(0), document.body);
</script>
<p></p>
</body>
</html>
And the output on the screen will be −
Updated on: 2020-11-20T13:48:59+05:30
272 Views
Advertisements