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easy-tweening

v1.2.0

Published

easy tweening

Downloads

11

Readme

easy-tweening

  • 仅1kb(gzipped)的补间动画库
  • 支持多种缓动算法
  • 使用Typescript编写,自动推断类型

安装

$ npm install easy-tweening

使用说明

| 参数 | 描述 | 类型 | 默认值 | |---------- |-------------------------- |------------------------------- |-------- | | duration | 动画持续时间(毫秒) | number | - | | easing | 缓动动画 | 见下方 | linear | | value | 需要计算的值 | number|number[] | - | | yoyo | 是否循环 | boolean | - | | onChange | 每帧计算后调用的回调函数 | (value:number|number[])=>void | - |

easing类型:linear | easeInQuad | easeOutQuad | easeInOutQuad | easeInCubic | easeOutCubic | easeInOutCubic | easeInQuart | easeOutQuart | easeInOutQuart | easeInQuint | easeOutQuint | easeInOutQuint;

基本使用

import tweening from "easy-tweening";

const element = document.querySelector(".box");
tweening({
  duration: 3000,
  easing: "easeInOutQuad",
  yoyo: true,
  value: [0, 200],
  onChange(x) {
    element.style.transform = `translateX(${x}px)`;
  },
})

计算多个值

import tweening from "easy-tweening";

const element = document.querySelector(".box");
tweening({
  duration: 3000,
  easing: "easeInOutQuad",
  value: [
    [0, 100],
    [200, 500],
  ],
  onChange([x, y]) {
    element.style.transform = `translate(${x}px,${y}px)`;
  },
});

补间动画完成后调用

本质上返回的是一个Promise,在动画执行完后会调用resolve

import tweening from "easy-tweening";

const element = document.querySelector(".box");
tweening({
  duration: 3000,
  easing: "easeInOutQuad",
  value: [0, 1],
  onChange(opacity) {
    element.style.opacity = String(opacity);
  },
}).then(() => {
  console.log("completed");
});

停止动画

传入参数keykey可以为任何值,元素、字符串、数字、对象,tweening会寻找key相同的元素,将其移出动画队列,所以确保key的唯一

import tweening, { stop } from "easy-tweening";

const element = document.querySelector(".box");
tweening({
  key: element,
  duration: 3000,
  easing: "easeInOutQuad",
  value: [0, 1],
  onChange(opacity) {
    element.style.opacity = String(opacity);
  },
});

stop(element);

清空动画

import { clear } from "easy-tweening";

clear();

使用许可

MIT