What is the call stack in JavaScript?
Asked on Jul 23, 2024
Answer
The call stack in JavaScript is a mechanism that keeps track of function calls, managing the execution context for each function. It operates in a "Last In, First Out" (LIFO) manner, meaning the last function added is the first to be executed.
// Example of a call stack in action
function firstFunction() {
console.log("First function");
secondFunction();
}
function secondFunction() {
console.log("Second function");
thirdFunction();
}
function thirdFunction() {
console.log("Third function");
}
firstFunction();
// Output:
// First function
// Second function
// Third functionAdditional Comment:
✅ Answered with JavaScript best practices.- The call stack starts with the "firstFunction" being called.
- "secondFunction" is added to the stack when called by "firstFunction".
- "thirdFunction" is then added to the stack by "secondFunction".
- Once "thirdFunction" completes, it is removed from the stack, followed by "secondFunction", and finally "firstFunction".
- The call stack ensures that functions are executed in the correct order and that their execution contexts are properly managed.
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