In this tutorial, we will learn how to write a function in JavaScript. It will provide JavaScript eval() function. We learn how to write program in javascript by using java eval() function.
Take JavaScript eval() function to write a program in javascript.
<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8 />
<title>JavaScript program using eval() function</title>
<script>
var a = 10, b = 20, c = 30, sum, sub ,div;
sum = eval("a + b + c");
sub = eval("a - b");
div = eval("a/b");
document.write(sum + "<br>");
document.write(sub + "<br>");
document.write(div);
</script>
</head>
<body>
</body>
</html>
Output:
60 -10 1/2