In JavaScript, the event loop is a mechanism that allows asynchronous code to run without blocking the main thread. It continuously monitors the call stack and the task queue for new tasks and schedules them to run in the appropriate order. What is a call stack? The call stack is a data structure used by JavaScript runtime to keep track of the sequence of function calls in the execution context. Every time a function is called, a new frame is pushed onto the top of the stack, and when a function completes its execution, the frame is popped off the top of the stack. When a JavaScript program starts executing, a global execution context is created, and its corresponding frame is pushed onto the call stack. As functions are called, new frames are pushed onto the stack, and when a function returns, its frame is popped off the stack. For example, consider the following code: function greet(name) { console.log( ` Hello, $
Benjamin Franklin