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
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.
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。
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
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.
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。