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防抖和节流 #3

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fish519 opened this issue May 5, 2019 · 1 comment

Owner

fish519 commented May 5, 2019

确保最后的能执行，flush

Owner Author

fish519 commented May 5, 2019

const debounce = (fn, time) => {
  let timeout = null;
  return () => {
    clearTimeout(timeout);
    timeout = setTimeout(function() {
      fn.apply(this, arguments)
    }, time)
  }
}

n秒内执行最后一次

const throttle = (fn, time) => {
  let canRun = true;
  return function(){
    if(!canRun) return;
    fn.apply(this, arguments);
    canRun = false;
    setTimeout(() => {
      canRun = true;
    }, time);
  }
}

n秒内执行一次

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