JavaScript—get started quickly

• Chapter1 JavaScript Basics
• 1-1 JavaScript basics - understanding js
• 1-2 JavaScript basic syntax
• 1-3 identifier arithmetic operator assignment operator
• 1-4 comparison operator logical operator
• 1-5 Variables Assignment of variables and variable types
• Chapter2 JavaScript Core Chapter
• 2-1 JavaScript core articles—conditional control statements
• 2-2 JavaScript core article—for loop statement
• 2-3 while loop and dowhile loop
• 2-4 Multi-branch switch statement
• 2-5 String manipulation functions
• 2-6 Type conversion
• 2-7 JavaScript Core Chapter—Array
• 2-8 Array operation function
• 2-9 JavaScript Core Chapter—Function
• 2-10 variable scope
• 2-11 JavaScript Core Chapter—Events
• Chapter3 JavaScript improvement
• 3-1 JavaScript Improvement—HTMLDOM
• 3-2 JavaScript Improvement—Changing CSS Styles
• 3-3 Date (date object)
• Chapter4 JavaScript Cases
• 4-1 JavaScript controls DIV style
• 4-2 JavaScript--select all
• 4-3 Weibo input word count (1)
• 4-4 Weibo input word count (2)