Detailed explanation of the process of writing JS

html +css Static page

js Dynamic interaction

Principle: js is to modify the style, such as popping up a dialog box. The pop-up process is that the box is disabled Change it to display:enable. Or change the color when the mouse points to it. It is a tool to modify the style.

• The process of writing JS

• Layout: HTML+CSS

• Event: Determine what actions users do (product design)

• Write JS: In theevent, use JS to modify the style of the page element(Additional attributes: determine which attributes to modify )

• What is an event

A complete event =

Scope: Action tag

Event statement: a user operation, for example: mouse in and out onmouseover, onmouseout,

Function action: a well-encapsulated action that can be understood as a more complex action.

The event statement is also a certain part of this scope An attribute, a function is a series of actions made by this attribute

• function Standard location and encapsulation

Format:

Position:

id="div1" onmouseover="toGreen()" onmouseout="toRed()">