Map.size property in JavaScript

Javascript HTML Web Development Front End Technology

The size property of Map object accepts a JSON string, and constructs an object based on the given text and, returns it.

Syntax

Its Syntax is as follows

mapVar.size

Example

Live Demo

<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');
      document.write("Size of the map object: "+mapVar.size);
   </script>
</body>
</html>