JavaScript(JS) JS calculate the area of a triangle

To calculate the area of a triangle in JavaScript, you can use the formula A = 0.5 * b * h, where A is the area of the triangle, b is the length of the base of the triangle, and h is the height of the triangle. Here's an example:

let base = 10;
let height = 5;
let area = 0.5 * base * height;
console.log(area); // Output: 25

In the example above, we declare two variables base and height with the values 10 and 5, respectively. We then calculate the area of the triangle using the formula 0.5 * base * height and store the result in a new variable area. Finally, we log the value of area to the console, which outputs 25.

Note that the variables base and height should both be measured in the same units (e.g. centimeters or inches) in order for the formula to work correctly.