使用jQuery返回async：false的附加属性

Question

I am making a call to a server which returns a JSON encoded object. This object has to be present before I can continue processing, therefore I am setting async:false in the request which looks like this:

    var response = null;
    $.ajax({
        type: 'POST',
        url: 'ajax/test',
        dataType: 'json',
        async: false,
        data : ({data : requests}),
        success: function(data) {
            response = data;
        }
    });

If async: true is set, I get the following object returned:

openGeolocationDialog   Object { show=0, data=""}

If async: true is set, I get the same object returned, but with an additional 'jQuery...' property:

openGeolocationDialog   Object { show=0, jQuery16209069375968417921={...}, data=""}

Why is this being returned and how can I suppress it?

Answer 1

Synchronous requests are bad from a user point of view: They block the browser.

You should just continue processing in the success callback:

$.post('ajax/test', {request: data}, function(response) {
     // continue here
});

Take a look at Deferred, too.

BTW you don't need dataType: 'json' if the server returns the proper content-type (i.e. application/json).