Question

Consider the code snippet below. What will the console output be and why?

(function(x) {
return (function(y) {
(x);
})(2)
})(1);

Answer 1

The console output of the given JavaScript IIFE code snippet will be undefined because the inner function does not perform any action with the variable 'x' nor does it have a return statement.

Step-by-step explanation:

The code snippet provided is a JavaScript Immediately Invoked Function Expression (IIFE) that accepts an argument x. Inside this function, another IIFE is defined that accepts an argument y. However, since the inner function only contains the statement (x) without any output or return statement, the console output will actually be undefined. This is because, while the variable x is indeed received by the outer function as the value 1, and the inner function is called with y equal to 2, there is no interaction between x and y. Additionally, x is not being used in any operation or returned, so the console will not display anything.

Also, your question mentions plotting a graph using specific values for (x,y) data pairs. While the JavaScript code does deal with x and y values, it does not involve any graph plotting. Graphs are typically plotted when there is a functional relationship between x (independent variable) and y (dependent variable), which is not being represented or calculated in this code snippet.