What is JavaScript

What JavaScript can do

JavaScript history

JavaScript tags and comments

Introduction to the concept of JavaScript variables

Data types of variables in JavaScript

Data type conversion of JavaScript variables

Several related functions of variables in JavaScript

Operators in JavaScript

JavaScript special operators and operator precedence

if conditional judgment statement in JavaScript

switch branch statement in JavaScript

while loop in JavaScript

for loop in JavaScript

The difference between break and continue in JavaScript

Basic knowledge of JavaScript arrays

Creation and manipulation of arrays in JavaScript

JavaScript array object property length and two-dimensional array

JavaScript function preliminary

JavaScript global variables and local variables

Copy-by-value and reference-by-value in JavaScript

Anonymous functions in JavaScript

What are events in JavaScript

JavaScript mouse click event (onclick)

JavaScript mouse over event (onmouseover)

JavaScript mouse move event (onmouseout)

JavaScript cursor focus event (onfocus)

JavaScript content selection event

JavaScript text box content change event (onchange)

JavaScript loading event (onload)

JavaScript object basics

Properties and methods of String object in JavaScript

Properties and methods of Array objects in JavaScript

Date object in JavaSCript

Math object in JavaScript

Number numerical object in JavaScript

Introduction to JavaScript BOM

window object properties and methods

Other common methods of Window object

screen screen object

navigator object

location address bar object

history object

Document Object Model (DOM)

Public properties and methods in the core DOM

Introduction to HTML DOM and new features

HTML DOM method of accessing HTML elements

CSS DOM dynamic styling

Event object in DOM

form object

Summary of submission and verification methods

input object

select object