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# 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``````

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