How to do something when available with jQuery?

问题

I've loaded a <textarea> with javascript,

and need to focus on it as soon as it's available.

The live() in jQuery must specify a "type" which doesn't exists in my case.

I need to do something like below:

$('#target').onAvailable($('#target').focus());

How to implement this with jQuery?

回答1:

Use a callback:

$("...").load("/something/to/load.html", function() {
  $("textarea", this).focus();
});

来源：https://stackoverflow.com/questions/1387464/how-to-do-something-when-available-with-jquery