How does js create an execution context

This article mainly explains "how to create the execution context of js". Interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn "how to create the execution context of js".

1. Creating an execution is divided into two phases: the creation phase and the execution phase.

2. Three things happen during the creation phase: bind this points to, also known as This Binding, create lexical environment components, and create variable environment components.

Example

ExecutionContext = {ThisBinding =, / / make sure that this points to LexicalEnvironment = {...}, / / lexical environment VariableEnvironment = {...}, / / variable environment} so far, I believe you have a deeper understanding of "how to create the execution context of js". You might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!