const throttle = function(func, duration) {
  let start = 0
  return function() {
    let that = this
    let now  = Date.now();
    if (now - start > duration) {
      func.apply(that, arguments);
      start = now
    } else {
      wx.showToast({
        title: `您的操作太频繁啦,请在${Math.ceil(duration/1000)}秒后再试哦~`,
        icon: 'none'
      })
    }
  }
}

module.exports = {
  throttle
}