JavaScript DOM Programming Art-Learning Notes (chapters tenth, 11th)

Tenth Chapter

1. In the animation, because js efficiency is high, so the transition effect is not visible

2. Off-topic: ① Foreign people write books, always first thanks to friends and family, finally thanks to their families.

3. "Unless you allow users to ' freeze ' mobile content, you should avoid moving content around the page"

4. Animations often encounter problems: moving the mouse back and forth, the animation will be a problem.

Cause: Queue events accumulate.

Resolution: Determines that if there is an animation at this time, the queue is emptied.

5. Small knowledge Point: ①ceil up ② floor down rounding ③round take the nearest integer

11th Chapter

1. "The infighting behind the advent of HTML5 is like a Korean soap opera "

2. In Web design, a Web page can be divided into three layers --- structure layer (HTML), style layer (CSS ), behavioral layer (js)

3. Small knowledge point : ① video knowledge Popularization:A. A video is a container that contains many things. This container specifies the location of different audio and video tracks in the file, as well as other playback-related features. B. audio and video tracks are encoded using different ' codecs '. The encoder determines how audio and video are decoded. The core of the codec is a set of algorithms for compressing, storing video, and without losing quality. C. None of the browsers supports all containers and codecs.

4. Digression: A new technical term will drive the flow of capital, and every industry wants to profit from it. And then when the tuyere is over, what will it leave behind?

JavaScript DOM Programming Art-Learning Notes (chapters tenth, 11th)