Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Length of a JavaScript associative array?
You can use the length property from JavaScript to get the length. Let’s create an Associative array −
var details = new Array(); details["Name"] = "John"; details["Age"] = 21; details["CountryName"] = "US"; details["SubjectName"] = "JavaScript";
Let us now get the length of the associative array −
Example
var details = new Array();
details["Name"] = "John";
details["Age"] = 21;
details["CountryName"] = "US";
details["SubjectName"] = "JavaScript";
console.log("The length=="+Object.keys(details).length);To run the above program, you need to use the following command −
node fileName.js.
Here, my file name is demo.js.
Output
This will produce the following output −
PS C:\Users\Amit\JavaScript-code> node demo.js The length==4
Updated on: 03-Sep-2020
379 Views
Advertisements