分享程序员开发的那些事...
更新时间：2023-01-03 18:28:50
console.log 不会等待函数完全完成后再记录它.这意味着您必须使 wallet.registerUser 异步，主要有两种方法可以做到这一点:
console.log won't wait for the function to fully complete before logging it. This means that you will have to make wallet.registerUser asynchronous, there are two main ways to do this:
回调 -这是当您将函数作为参数传递给现有函数时，该函数将在您的 axios 调用完成后执行.以下是它如何处理您的代码:
Callback - this is when you pass a function as a parameter into your existing function which will be executed once your axios call has finished. Here is how it would work with your code:
wallet.registerUser=function(data, callback){
axios.post('http://localhost:8080/register',{
phone:data.phone,
password:data.password,
email:data.email
}).then(response =>{
callback(response.data.message);
console.log(response.data.message);
}).catch(err =>{
console.log(err);
})
}
wallet.registerUser(data, function(response) {
console.log(response)
});
承诺——最简单的方法是将 async 放在函数名前面.这将使函数返回的任何内容以承诺的形式返回.这就是它在您的代码中的工作方式:
Promise -
The easiest way to do this is to put async in front of your function name. This will make anything returned from the function return in the form of a promise. This is how it would work in your code:
wallet.registerUser=async function(data){
axios.post('http://localhost:8080/register',{
phone:data.phone,
password:data.password,
email:data.email
}).then(response =>{
return response.data.message;
console.log(response.data.message);
}).catch(err =>{
console.log(err);
})
}
wallet.registerUser(data).then(function(response) {
console.log(response);
});
以下是有关异步函数的更多信息:
Here is some more information on asynchronous functions:
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/async_function