我不确定这里到底发生了什么，我认为变量是一个 jquery 对象.

I am not sure what exactly is happening here, I think the fact that the variable is a jquery object.

这只追加一次，我的问题是为什么?

This only appends once, my question is why?

var newInput = $('<input/>');
$('#newDiv').append(newInput);
$('#newDiv').append(newInput);

虽然这如我所想的那样有效

Though this works as I would assume

var newInput = '<input>';
$('#newDiv').append(newInput);
$('#newDiv').append(newInput);

感谢您的帮助！

推荐答案

当你执行 $('