如何在jquery中检测何时将新元素添加到文档中？

如果您想在其上执行一些jQuery，则还可以执行诸如livequery（额外插件）之类的操作：

$('column-header').livequery(function(){    // do things here with your column-header, like binding new events and stuff.    // this function is called when an object is added.    // check the API for the deletion function and so on.});