Handling Node.JS as an Asynchronous Application with Error Handling
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JavaScript is a single-threaded engine which means that one thing can happen at one time. To run such concurrency in a Javascript code, we use asynchronous calls. JavaScript creates a stack where all of the functions are being run as code. Javascript creates an environment which calls the main() function. This environment is like a stack on top of which the displayMessages() function is added. The displayMessage() function holds a set of functions. The first one that is executed is myFunctionOne() therefore it is added on the top of the execution stack.