JavaScript(JS) JS perform function overloading

In JavaScript, there is no built-in support for function overloading, which is the ability to define multiple functions with the same name but different parameter lists. However, you can simulate function overloading in JavaScript using a combination of conditional statements and optional parameters.

Here is an example of how to simulate function overloading in JavaScript:

function calculate(x, y) {
  if (typeof y === 'undefined') {
    // If y is not provided, assume x is a single array containing x and y
    return x[0] + x[1];
  } else {
    // If both x and y are provided, assume they are separate values
    return x + y;
  }
}

console.log(calculate([1, 2])); // Output: 3
console.log(calculate(1, 2)); // Output: 3

In this example, the calculate function takes two parameters, x and y. Inside the function, we use a conditional statement to check whether y is undefined. If it is, we assume that x is a single array containing both x and y, and we add them together. If y is not undefined, we assume that x and y are separate values, and we add them together.

When we call the calculate function with an array containing x and y as the first parameter, the function treats it as a single array and adds the values together. When we call the function with separate x and y values, the function treats them as separate values and adds them together.

Note that this is just one way to simulate function overloading in JavaScript, and there are many other approaches you can take.