问小程序调用登录和退出API 监听事件会累加触发？

onUnload: function () {

let onMessageReceived = function(res){

console.log(res,'取消监听')

}

let onSdkReady = function(res){

console.log(res,'取消监听')

}

tim.off(TIM.EVENT.SDK_READY, onSdkReady);

tim.off(TIM.EVENT.MESSAGE_RECEIVED, onMessageReceived)

let promise = tim.logout()

promise.then(function(imResponse) {

console.log(imResponse,'退出成功')

}).catch(function(imError) {

console.warn('logout error:', imError);

})

},