JS Beginner Learn

One. Write a JS step

1, first realize the layout

2. In the implementation principle

3. Understanding JS Syntax

Two. js how to get elements

1. Get elements by ID name

var variable = document.getelementbyidx_x ("id name");//element: Element

Three. Move an element out of your sight

1.display:none; Show None

2.visibility:hodden;

Hide

3. Set Width/height to 0

4. Transparency is 0

5.left/top

6. Cover with the same div as the background

7.margin for assignment

Four. Events

Mouse, keyboard, System, form

OnClick onmouseover onmouseout onmouseup onmousedown onmousemove

Five. Add an Event

element. onclick = hide; . Hide is a function that does not add ();

function Hide () {
General that element. Onclick/onmouseover.style.width/background = "200px";

}

Six. read operation of elements and write operations (modify, replace)

element. Value/name = "string";//write operation

var variable = element. Value/name;//Read Operation

+ in JS to indicate the connection

Get the content in P

This is a piece of text

InnerHTML

JS Beginner Learn