What is a Double Data Type?
A double data type is a floating-point numeric data type that can store decimal numbers with a larger range and higher precision compared to other numeric data types like integers or floats. It is often used when precise calculations or decimal values are required.
Adding a Double Data Type
<script> var num1 = 3.14; var num2 = 1.5; var sum = num1 + num2; document.write("The sum of " + num1 + " and " + num2 + " is " + sum); </script>
In the above code snippet, we declare two variables num1 and num2, assigned with the values 3.14 and 1.5 respectively. We then create another variable called sum which stores the sum of these two variables using the addition operator (+).
To display the result, we use the document.write() method to output the text “The sum of [num1] and [num2] is [sum]” where [num1], [num2], and [sum] are replaced with their respective values.
The sum of 3.5 is 4.64
It’s important to note that the result of adding two double values will also be a double value.
The ability to work with double data types is valuable when dealing with calculations involving decimal numbers. By understanding how to add double values, you can perform more precise calculations in your code.