For Each In Map Javascript

Use foreach method to iterate through a map a map has two components, the key and the value. The array filter () method the array foreach () method syntax Syntax the foreach() method is represented by the following syntax:

It is not invoked for keys that have been deleted. However, it is executed for values which are present but have the value undefined. Map () does not execute the function for empty elements.

On the other hand, map will similarly call the function for each array element but instead of discarding its return value, it will capture it and build a new array of those return values.

This loop terminates until the last map key, and its value is iterated (only if you do not terminate before that). The array filter () method the array foreach () method syntax Map () does not change the original array. We have created two arrays, one is working with the foreach () and the other with the map (), and both producing the same result.