w3resource

JavaScript: Calculate degrees between 2 points with inverse Y axis

JavaScript Math: Exercise-27 with Solution

Write a JavaScript function to calculate degrees between 2 points with the inverse Y axis.

Test Data :
console.log(pointDirection(1, 0, 12, 0));
0
console.log(pointDirection(1, 0, 1, 10));
90

Sample Solution:

JavaScript Code:

// Define a function named pointDirection that calculates the direction angle from point 1 to point 2.
function pointDirection(x1, y1, x2, y2) {
    // Calculate the angle using arctangent, and convert it from radians to degrees.
    return Math.atan2(y2 - y1, x2 - x1) * 180 / Math.PI;
}

// Output the result of calculating the direction angle from (1, 0) to (12, 0) to the console.
console.log(pointDirection(1, 0, 12, 0));
// Output the result of calculating the direction angle from (1, 0) to (1, 10) to the console.
console.log(pointDirection(1, 0, 1, 10));

Output:

0
90

Flowchart:

Flowchart: JavaScript Math- Calculate degrees between 2 points with inverse Y axis

Live Demo:

See the Pen javascript-math-exercise-27 by w3resource (@w3resource) on CodePen.


Improve this sample solution and post your code through Disqus.

Previous: Write a JavaScript function to calculate the nth root of a number.
Next: Write a JavaScript function to round up an integer value to the next multiple of 5.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



Become a Patron!

Follow us on Facebook and Twitter for latest update.

It will be nice if you may share this link in any developer community or anywhere else, from where other developers may find this content. Thanks.

https://w3resource.com/javascript-exercises/javascript-math-exercise-27.php