调用wx.cloud.uploadFile,报错wx is not define是为什么呢?

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调用wx.cloud.uploadFile,报错wx is not define是为什么呢?When calling wx.cloud.uploadFile, why is the error wx is not define reported?

myuploadFile(tempFilePath,successUp,failUp,i,length){        wx.cloud.uploadFile({            cloudPath:'filebase_app/'+new Date()+'/'+tempFilePath[i].name,            filePath:tempFilePath[i].path,            success:(res)=>{                successUp++                console.log(res.data)            },            fail:(err)=>{                failUp++                console.log(err)            },            complete:()=>{                i++                if(i==length){                    wx.showToast({                      title: successUp+'份上传完成',                    })                }                else{                    // this.myuploadFile(tempFilePath,successUp,failUp,i)                }            }        })    },

myuploadFile(tempFilePath,successUp,failUp,i,length){        wx.cloud.uploadFile({            cloudPath:'filebase_app/'+new Date()+'/'+tempFilePath[i].name,            filePath:tempFilePath[i].path,            success:(res)=>{                successUp++                console.log(res.data)            },            fail:(err)=>{                failUp++                console.log(err)            },            complete:()=>{                i++                if(i==length){                    wx.showToast({                      title: successUp+'份上传完成',                    })                }                else{                    // this.myuploadFile(tempFilePath,successUp,failUp,i)                }            }        })    },

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