JavaScript Map keys() method
The JavaScript map keys() method is used to retrieve an object of the Map iterator that contains the keys for each element. Syntax: mapObj.keys() Return: An object of Map iterator. Example: <!DOCTYPE html> <html> <body> <script> var hello=new Map(); hello.set(‘a’,”GOOD MORNING”); hello.set(‘b’,”GOOD AFTERNOON”); hello.set(‘c’,”GOOD EVENING”); hello.set(‘d’,”GOOD NIGHT”); var array= hello.keys(); document.writeln(array.next().value+”<br>”); document.writeln(array.next().value+”<br>”); document.writeln(array.next().value+”<br>”); document.writeln(array.next().value); </script> … Read more