How to use the forEach() method In Javascript

Q: How to use the forEach() method In Javascript

The forEach() method is used to iterate through each element of an array and execute a provided function. It does not return a new array, but it’s helpful when you want to operate on each element without modifying the original array.

Using the map() method

The forEach() method is used to iterate through each element of an array and execute a provided function. It does not return a new array, but it’s helpful when you want to operate on each element without modifying the original array.

Example: The below example demonstrates how to get values from specific objects inside an array using the forEach method in JavaScript.

Javascript

const courses = [
    { name: 'C++', fees: 30000 },
    { name: 'Python', fees: 35000 },
    { name: 'JavaScript', fees: 40000 },
    { name: 'Java', fees: 45000 },
];
 
const cheapCourses = [];
 
courses.forEach((course) => {
    if (course.fees <= 35000) {
        cheapCourses.push(course.name);
        cheapCourses.push(course.fees);
    }
});
 
console.log(cheapCourses);

Output

[ 'C++', 30000, 'Python', 35000 ]

How to get Values from Specific Objects an Array in JavaScript ?

In JavaScript, an array is a data structure that can hold a collection of values, which can be of any data type, including numbers, strings, and objects. When an array contains objects, it is called an array of objects.