Question

我有三个功能，需要一个接一个地执行


CLUSTERED INDEX : CompletedQuestionnaireId;    
    
CREATE NONCLUSTERED INDEX NIX_Dairy_data_Summary
ON [Report_performTest] SiteID,SubjectNo
INCLUDE   All selected columns   
    
CREATE NONCLUSTERED INDEX NIXQues_Dairy_data_Summary
ON [Report_performTest](Questionnaire_Number)
INCLUDE  All selected columns

我想在$(document).ready(function(){ // Async function getAllTask(); // Need to call after above function completed its process loadTasks(); initView(); listenEvents(); }); async function getAllTask(){ // For this ap.request alone I used await, Because of await keyword I make this function as async await AP.request(...); }函数完成其处理后执行所有其他函数。但是函数getAllTask()是异步的。请帮我解决这个问题。

有人遇到同样的问题吗？

Answer 1

在调用getAllTask（）时也使用await；并使函数异步，这样代码将等待函数完成

$(document).ready(async function(){
    // Async function
    await getAllTask();
    // Need to call after above function completed its process
    loadTasks();
    initView();
    listenEvents();
});

async function getAllTask(){
    // For this ap.request alone I used await, Because of await keyword I make this function as async
    await AP.request(...);

}

您还可以实现Promise对象=> https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise 用resolve（）完成异步功能，这里是一个示例

 $(document).ready(async function(){
        // Async function
        await getAllTask().then((data)=>{
            //Here you will get resolve(data)
            console.log(data)
        }).catch((err)=>{
            console.log(err)
                //here you will get error given
        })
        // Need to call after above function completed its process
        loadTasks();
        initView();
        listenEvents();
    });

    async function getAllTask(){
        return new Promise((resolve,reject)=>{
        // For this ap.request alone I used await, Because of await keyword I make this function as async
            await AP.request(...).then((data)=>{
                //It will resolve data, same as return
                resolve(data)
            }
            .catch((err)=>{
                //It will return the error given
                reject(err)
            };
        }
    }

执行异步函数后执行函数

1 个答案: