How to Count the Sum of Two Representations in JavaScript?

In JavaScript, you can count the sum of two numbers by using the + operator. The + operator performs addition and concatenation, depending on the operands. When both operands are numbers, the + operator performs addition.

Here’s an example of how you can count the sum of two numbers in JavaScript:

var x = 10;
var y = 20;
var sum = x + y;
console.log(sum); // 30

In the example above, the variables x and y are assigned the values 10 and 20, respectively. The sum of x and y is calculated by using the + operator, and the result is assigned to the variable sum. Finally, the value of sum is logged to the console.

You can also use the + operator to add two string representations of numbers. In this case, the + operator performs concatenation, but you can still get the sum by converting the strings to numbers using the Number function or a unary plus operator +.

Here’s an example of how you can count the sum of two string representations of numbers in JavaScript:

var x = "10";
var y = "20";
var sum = Number(x) + Number(y);
console.log(sum); // 30

In this example, the variables x and y are assigned the string values "10" and "20", respectively. The sum of x and y is calculated by converting the strings to numbers using the Number function, and the result is assigned to the variable sum. Finally, the value of sum is logged to the console.