How Ajax in jquery Returns the result, not the callback method, is the _ajax associated with the sequential execution

Because the default Ajax is asynchronous, it does not affect downward execution when the result is not responding. So it has to be implemented in a callback way. This programme is more efficient.

If you want to return the result, change the parameter async in Ajax to False, that is, execute in the same order, as the following implementation, you can return to the result.

This practice is not recommended, however, where it is not necessary

Copy Code code as follows:

function (url,params) {
var outdata;
$.ajax ({
Type: "Get",
Async:false,
DataType: "JSON",
Url:url,
Data:params,
Success:function (data) {
Outdata = data;
},
Error:function (e) {
Alert (' Ajax error ');
}
});

return outdata;
}