小程序常用方法封裝

// 設置緩存
function setItem(key, value) {
  wx.setStorageSync(key, value)
}
// 獲取緩存
function getItem(key) {
  return wx.getStorageSync(key)
}
// 移除緩存
function removeItem(key) {
  wx.removeStorageSync(key)
}
// 清除緩存
function clearAll() {
  wx.clearStorageSync()
}
//下拉刷新
function pullDownRefresh() {
  wx.startPullDownRefresh()
}
//滾動事件
function pageScrollTo(scrollTop,duration) {
  wx.pageScrollTo({
    scrollTop, //滾動據頂部距離
    duration  //滾動時間
  })
}
//打開藍牙設備
function openBluetooth() {
  return new Promise((resolve, reject) => {
    wx.openBluetoothAdapter({
      success (res) {
        resolve (res)
      },
      fail (res) {
        wx.showModal({
             content: '請開啓手機藍牙後再試'
         })
     }
    })
 })
}
//開始搜索藍牙設備
function startBluetooth() {
  return new Promise((resolve, reject) => {
    wx.startBluetoothDevicesDiscovery({
      success (res) {
        console.log(res);
        resolve (res)
      },
      fail (res) {