JavaScript Map entries() method

The JavaScript map entries() method returns an object of new map iterator. This object contains the key-value pair for each element. It maintains insertion order.

Syntax

The entries() method is represented by the following syntax:

Return Value

A new object of map iterator.

JavaScript Map entries() method example

Here, we will understand entries() method through various examples.

Example 1

Let's see a simple example of entries() method.

<script>
var map=new Map();
map.set(1,"jQuery");
map.set(2,"AngularJS");
map.set(3,"Bootstrap");

var itr=map.entries();
document.writeln(itr.next().value+"<br>");
document.writeln(itr.next().value+"<br>");
document.writeln(itr.next().value);
  </script>

Test it Now

Output:

1,jQuery
2,AngularJS
3,Bootstrap

Example 2

Let's see the same example using for loop.

<script>
var map=new Map();
map.set(1,"jQuery");
map.set(2,"AngularJS");
map.set(3,"Bootstrap");
var itr=map.entries();
for(i=0;i<map.size;i++)
  {
document.writeln(itr.next().value+"<br>");
  }
  </script>

Test it Now

Output:

1,jQuery
2,AngularJS
3,Bootstrap

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