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code-essays's Introduction

个人思考和记录，代码内有相关注释，仅供一起学习。

img-lazyload

图片懒加载，使用 IntersectionObserver 和 滚动监听（加简单节流） 两种方式实现

draggable

博客：JS实现拖拽元素交换位置

deep-copy

深拷贝的思考和探索：JSON深拷贝 --> 普通深拷贝 --> 不会栈溢出的循环深拷贝

  • 引用类型数据和数据类型
  • 连续赋值的特性
  • 栈

防抖、节流

博客：JS节流(throttle)和防抖(debounce)的理解和实现

  • 防抖：停止操作一个时间周期后，执行方法
  • 节流：立即执行第一次，之后每隔一个时间周期触发一次方法，操作时间不足一个周期则不触发
  • 节流升级：增加参数，用来决定是否执行最后一次未达到一个时间周期的动作，默认不执行

CommonJs 和 ES Module

  • 引入及使用方式和区别
    • 导入导出
    • 被引用模块对引用模块的值的影响
    • 声明提升
  • 循环引用
    • 缓存
    • 引用逻辑

code-essays's People

Contributors

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