From the example above you can calculate the total to be 11. Var y 2. Mathjs is an extensive math library for JavaScript and Nodejs.
Subtracts the value on the right from the variable value on the left and returns the new variable value.
Write a JavaScript function to check whether a variable is numeric or not. The exponentiation operator raises the first operand to the power of the second operand. Assign the value 7 to z 5 2 Try it Yourself. Variables in JavaScript are containers which hold reusable data.