It assigns values from the right side operand to the left side operand. For example, C = A + B will assign the value of A + B into C.
Example
You can try to run the following code to work with Assignment Operator −
<html>
<body>
<script>
var a = 33;
var b = 10;
document.write("Value of a => (a = b) => ");
result =(a = b);
document.write(result);
</script>
</body>
</html>