Data was not returned during alert, and the result must be 0.

Look at the results:

No automatic loading

use

Shops. Load({callback:function(record，a，b){

alert(record . data . length)；

}});

It's all empty. I've met it, too. Nothing has moved, so I'm fine.

I suggest you keep only the most basic functions, or try another environment. The code itself is absolutely fine!