First, make two optimizations for slider:

1. Use Keepalive to save the page cache

The component calls destroyed to destroy the instance when the page is destroyed. So at this time to clear the timer, it is a good habit to become conducive to memory free.

Now formally fetching data:

As can be seen from the above figure, QQ Music protects the interface by setting the refer and host.

So how do you get the data?

To build the = = > webpack. Dev. Conf. Js

The promise.resolve (value) method returns a Promise object resolved with the given value. But if this value is a thenable (namely with then method), will return to the promise of “follow” the thenable object, using its final state (resolved/rejected/pending/hills); If the value passed in is itself a Promise object, that object is returned as the return value of the promise.resolve method; Otherwise return a Promise object with that value as a success status.