JavaScript Map forEach() method

The JavaScript map forEach() method is used to execute the specified function once for each key/value pair.

Syntax:

mapObj.forEach(callback)

Parameters:
callback: It refers to the function which have to be executed.

Example:

<!DOCTYPE html>
<html>
<body>
<script>  
var hello=new Map();  
hello.set(1,"GOOD MORNING");
hello.set(2,"GOOD AFTERNOON");
hello.set(3,"GOOD EVENING");  
hello.set(4,"GOOD NIGHT");  
document.writeln("Elements are:"+"<br>");  
function print(elements)   
{  
document.writeln(elements+"<br>");  
}  
hello.forEach(print);  
</script>  
</body>
</html>

Output:

GOOD MORNING
GOOD AFTERNOON
GOOD EVENING
GOOD NIGHT
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