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一图秒懂函数防抖和函数节流
source link: https://juejin.im/post/5c404329e51d4551e064a332
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函数防抖（debounce）和函数节流（throttle）都是为了缓解函数频繁调用，它们相似，但有区别 如上图，一条竖线代表一次函数调用，函数防抖是间隔超过一定时间后才会执行，函数节流是一定时间段内只执行一次。 函数防抖实现 function debounc
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