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
Map.keys() function in JavaScript
The keys() function of Map object is similar to entries but, it returns an iterator object containing the keys of a map object.
Syntax
Its Syntax is as follows
Map.keys()
Example
<html>
<head>
<title>JavaScript Example</title>
</head>
<body>
<script type="text/javascript">
var mapVar = new Map();
mapVar.set('1', 'Java');
mapVar.set('2', 'JavaFX');
mapVar.set('3', 'HBase');
mapVar.set('4', 'Neo4j');
var it = mapVar.keys();
for(i=0; i<mapVar.size; i++) {
document.write(it.next().value);
document.write(" <p> ");
}
</script>
</body>
</html>
Output
1 2 3 4
Updated on: 2020-06-25T12:09:19+05:30
55 Views
Advertisements