npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

js-frame-animation

v1.0.0

Published

A frame animation library

Downloads

3

Readme

animation

通常我们会遇到一些需求,用js实现一组动画(这里指的是由一帧帧图片组合而成的动画,非jq的animate)。

其实原理很简单,如果是多张图,就定时去改变image的src,如果是一张图,就定时改变backgroud-position;同时,我们还要支持图片预加载,动画执行次数(一次,n次,无限次),动画暂停,动画执行完成的回调等等。

有了上述需求,我觉得写一个通用的animation库还是很有必要的,这样用户就每必要为每一组动画写逻辑了,从繁琐的劳动中解放,不正是每个coder所期望的么:)

示例:

var positions = [
 '120 0', '240 0', '360 0'
]

var imglist = ['./horse.jpg']
var rabbitEle = document.querySelector('#rabbit')

var rabbit = animation(imglist)
.changePosition(rabbitEle, positions, './horse.jpg')
.repeat(4)
rabbit.start(time * 10)
setTimeout(() => {
  rabbit.pause()
}, 2000);
setTimeout(() => {
  rabbit.restart()
}, 3000);

changePosition(ele, positions, imageUrl) // 改变元素的 background-position 实现帧动画

changeUrl(ele, imgList) // 通过改变图片元素的URL 实现帧动画

repeat(times) // 动画执行的次数 times为空时无限循环

wait(time) // 动画的等待时间

then(callback) // 自定义执行任务

start(interval) // 动画开始执行,interval 表示动画执行的间隔 默认为16.7ms

pause() // 动画暂停

restart() // 动画从上一次暂停处重新执行