Calculate Area of Triangle in JavaScript

In this post we are going to write a JavaScript program to find the “Area of Triangle”.

Here is the complete JavaScript program to find the “Area of Triangle”:

<!DOCTYPE html>

<html>

<head>

<title>Area of Traingle - Simple JavaScript Example</title>

function findAreaOfTriangle(){

var RecLen, RecWid, Area;

RecLen = document.getElementById("rec_len").value;

RecWid = document.getElementById("rec_wid").value;

Area = RecLen * RecWid;

document.getElementById("result").value = Area;

}

</script>

</head>

<body>

<br />

<h2>JavaScript to find Area of Square - Demo by Theonlytutorials.com</h2>

<br />

<label for="rec_len">Enter Rectangle Length:</label>

</div>

<label for="rec_wid">Enter Rectangle Width:</label>

</div>

<label for="result">Result:</label>

</div>

<button type="submit" class="btn btn-default" onclick="findAreaOfTriangle()">Submit</button>

</div>

</body>

</html>

You can also see the demo of the above script here:

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