What is JavaScript execution context?
An example of an AI chatbot conversation about JavaScript execution context and its importance.
Can you explain what JavaScript execution context is?
Sure! JavaScript execution context is an abstract concept that holds information about the environment within which JavaScript code is executed. It includes the scope, the value of 'this', and the variables available at that point.
Why is execution context important in JavaScript?
It's crucial because it determines how variables and functions are accessed and executed. Understanding it helps in debugging and writing better code.
Can you give an example of how execution context works?
Absolutely! When a function is invoked, a new execution context is created. For instance, if you have a function that accesses a variable, that variable must be defined in the current or outer execution context.
What are the different types of execution contexts?
There are three main types: Global Execution Context, Function Execution Context, and Eval Execution Context. Each serves a different purpose in code execution.
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