To iterate over a Map object using forEach(), you can follow these steps:

1. Create a Map object and populate it with key-value pairs. Here’s an example:

const map = new Map();
map.set('key1', 'value1');
map.set('key2', 'value2');
map.set('key3', 'value3');

1. Use the forEach() method to iterate over the Map object.

map.forEach((value, key) => {
   console.log(`Key: ${key}, Value: ${value}`);
});

In the above code, we pass a callback function to forEach() that takes two parameters: value and key. The function is executed for each entry in the Map, and the current value and key are passed as arguments to the callback function.

You can perform any desired operations inside the callback function. In this example, we simply log each key-value pair to the console.

Note: The order of iteration in a Map object is based on the order of insertion.