jq如何判断含有某个子元素节点?

Question

假如我一个div;里面有三个节点 ；现在我要用jq来判断节点样式名为class的节点是否存在

怎么判断

Answer 1

How does jq determine that a node contains a certain sub-element? - PHP Chinese website Q&A - How does jq determine that a node contains a certain sub-element? - PHP Chinese website Q&A

Take a look around and learn.

Answer 2

判断的话应该是$('div').children().is('.className')，返回布尔；直接用的话$('div').children('.className')应该就行。