jQuery，如果div ID有孩子 [英] jquery if div id has children

问题描述

这种if条件正在给我带来麻烦:

This if-condition is what's giving me trouble:

if (div id=myfav has children) {
   do something
} else {
   do something else 
}

我尝试了以下所有操作:

I tried all the following:

if ( $('#myfav:hasChildren') ) { do something }
if ( $('#myfav').children() ) { do something }
if ( $('#myfav:empty') ) { do something }
if ( $('#myfav:not(:has(*))') ) { do something }

推荐答案

if ( $('#myfav').children().length > 0 ) {
     // do something
}

这应该有效. children()函数返回一个包含子级的JQuery对象.因此，您只需要检查一下大小，看看它是否至少有一个孩子.

This should work. The children() function returns a JQuery object that contains the children. So you just need to check the size and see if it has at least one child.

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