JavaScript - Calculate the midpoint between two points

JavaScript fundamental (ES6 Syntax): Exercise-267 with Solution

Write a JavaScript program to calculate the midpoint between two pairs of points.

• Destructure the array to get x1, y1, x2 and y2.
• Calculate the midpoint for each dimension by dividing the sum of the two endpoints by 2

Sample Solution:

JavaScript Code:

``````const mid_point = ([x1, y1], [x2, y2]) => [(x1 + x2) / 2, (y1 + y2) / 2];
console.log(mid_point([6, 6], [4, 4]));
console.log(mid_point([2, -2], [4, 4]));
console.log(mid_point([2, 2], [-4, -1]));
console.log(mid_point([1, 3], [2, 5]));
```
```

Sample Output:

```[5,5]
[3,1]
[-1,0.5]
[1.5,4]
```

Flowchart:

Live Demo:

See the Pen javascript-fundamental-exercise-267 by w3resource (@w3resource) on CodePen.

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JavaScript: Tips of the Day

Shorten an array using its length property

A great way of shortening an array is by redefining its length property.

```let array = [0, 1, 2, 3, 4, 5, 6, 6, 8, 9]
array.length = 4
// Result: [0, 1, 2, 3]
```

Important to know though is that this is a destructive way of changing the array. This means you lose all the other values that used to be in the array.

Ref: https://bit.ly/2LBj213