---
title: "190501-TIL"
date: 2019-05-01
tags: ["TIL"]
url: https://sub2n.github.io/2019/05/01/190501-TIL/
---

# 190501-TIL

## Today I Learned

I learned about the operation principle and process of web browser. HTML parser creates DOM tree, CSS parser creates CSSOM tree and JavaScript parser creates AST(Abstract Syntax Tree).

Now I can explain JavaScript and ECMAScript.