Lesson 2: map

[seemcat]

Takes in an object and a function and calls the function as many times as there are key/value pairs with each key, value. It's like you're creating a forEach function for objects. For each key/value pair in the object, you'll be doing calling the function to each of those key/value pairs. Also, map is a native method in Javascript which means doing the same thing to every element in the array. So you're essentially writing a map method for objects!

Example 1:

const obj1 = {
     name: 'Maricris',
     age: 24,
};

const func1 = (key, value) => {
     console.log(`Key/Value Pair = ${key}: ${value}`);
};

Input: (obj1, func1)
Output: 
Key/Value Pair = Name: Maricris
Key/Value Pair = Age: 24

Example 2:

const obj2 = {
     curriculum: 'HTML',
     challenges: 3,
     students: 'Kinue + Saumya +Amey',
     level: 5,
};

const func2 = (key, value) => {
     console.log(`Key/Value Pair = ${key}: ${value}`);
};

Input: (obj2, func2)
Output: 
Key/Value Pair = curriculum: HTML
Key/Value Pair = challenges: 3
Key/Value Pair = students: Kinue + Saumya + Amey
Key/Value Pair = level: 5