How would you implement method overloading in JavaScript without using classes?

 Method overloading is a technique in which a function or method can have multiple definitions that vary by the number and/or types of arguments passed to it. This technique is commonly used in object-oriented programming languages such as Java, C# and C++, but is not available in languages such as JavaScript.

However, it is possible to implement method overloading in JavaScript without using classes. The most common approach is to use function parameters and argument checking. Function parameters are the parameters that are declared when the function is defined. They can be used to check the number and types of the arguments that are passed to the function. For example, the following function is defined with two parameters: function sum(a, b) { return a + b; } The parameters “a” and “b” indicate that the function expects two arguments to be passed when it is called. If the function is called with only one argument, then the result will be an error. Argument checking is the process of checking the number and types of the arguments that are passed to a function. This is usually done by comparing the number and types of the arguments that were passed to the function with the parameters that were defined when the function was declared. If the two do not match, then an error is thrown or the function is handled differently. For example, the following function is defined with three parameters: function sum(a, b, c) { return a + b + c; } If the function is called with only two arguments, then the result will be an error. However, if the function is called with three arguments, then the result will be the sum of the three arguments. By using function parameters and argument checking, it is possible to implement method overloading in JavaScript. For example, the following function can be used to implement method overloading: function sum() { // Check the number of arguments passed if(arguments.length === 2) { // If two arguments are passed, then return the sum of the two return arguments[0] + arguments[1]; } else if(arguments.length === 3) { // If three arguments are passed, then return the sum of the three return arguments[0] + arguments[1] + arguments[2]; } else { // If any other number of arguments are passed, then throw an error throw "Invalid number of arguments"; } } This function can be used to implement method overloading in JavaScript. It checks the number of arguments that are passed to the function and handles them accordingly. If two arguments are passed, then the sum of the two arguments is returned. If three arguments are passed, then the sum of the three arguments is returned. If any other number of arguments are passed, then an error is thrown. By using function parameters and argument checking, it is possible to implement method overloading in JavaScript without using classes. This approach is relatively simple and makes it easy to implement method overloading in JavaScript.