vue-搜索功能-实时监听搜索框的输入，N毫秒请求一次数据

export function debounce(func, delay) {
  let timer;
  return function (...args) {
    if (timer) {
      clearTimeout(timer)
    }
    timer = setTimeout(() => {
      func.apply(this, args)
    }, delay)
  }
}