微信小程序复制文本功能

copy(){
            wx.setClipboardData({
                data: this.order.orderCode,
                success: function (res) {
                    wx.getClipboardData({
                        success: function (res) {
                            wx.showToast({
                                title: '复制成功'
                            })
                        }
                    })
                }
            })
        },