JavaScript Execution V02: Loading, Parsing
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Description
Parsing in JavaScript refers to the process of analyzing and interpreting a piece of code or data to convert it into a format that the JavaScript engine can execute or use.
Types of Parsing in JavaScript:
1. Parsing Code
The JavaScript engine parses source code to understand its structure and execute it. This involves:
Lexical Analysis: Breaking the code into tokens (e.g., keywords, variables, operators).
Syntax Analysis: Analyzing the tokens to form an Abstract Syntax Tree (AST), which represents the structure of the code.
Execution: Using the AST to generate bytecode or machine code for execution.