How to Code Triangle Program in JavaScript

Calculate the area of a triangle in JavaScript, you can use the following approach:

Step 1: First, define a function that takes three arguments: `base`, `heigh`, and `unit`. The `base` and `height` arguments represent the dimensions of the triangle, and the `unit` argument represents the unit of measurement (e.g. "cm", "in", etc.).

function triangleArea(base, height, unit) {
  // code to calculate the area of the triangle
}

Step 2: Inside the function, use the following formula to calculate the area of the triangle:
area = (base * height) / 2

function triangleArea(base, height, unit) {
  var area = (base * height) / 2;
  // return the result
}

Step 3: Finally, use the `return` statement to return the `area` variable along with the `unit` of measurement.

function triangleArea(base, height, unit) {
  var area = (base * height) / 2;
  return area + " " + unit;
}

Here is the complete code:

function triangleArea(base, height, unit) {
  var area = (base * height) / 2;
  return area + " " + unit;
}

var result = triangleArea(2, 3, "cm");
console.log(result); // Output: 3 cm

You can also use the following shortened version of the function:

function triangleArea(base, height, unit) {
  return ((base * height) / 2) + " " + unit;
}

var result = triangleArea(2, 3, "cm");
console.log(result); // Output: 3 cm

Rakib Alom

About author

I am a professional web developer. I love programming and coding, and reading books. I am the founder and CEO of StorialTech.