jQuery mobile pagecontainer load()

问题

What does this code do?

$(":mobile-pagecontainer").pagecontainer("load", "#welcome2");

I have a jQuery UI autocomplete input box which I initialize, but it only works if any of the following is true:

• I call load on the fragment.
• The visitor starts on #welcome2 (rather than coming from #welcome1)

I don't understand what load does or why I need it.

EDIT: Could it be something with the order in which jQuery UI and jQuery mobile are loaded?

EDIT2: It seems no widgets on not-loaded fragment are initialized. I can't even do things like .checkboxradio("disable") unless the fragment has been explicitly loaded. what does loading mean and why isn't it done when the document is loaded?

来源：https://stackoverflow.com/questions/24976793/jquery-mobile-pagecontainer-load