https://blog.csdn.net/weixin_44134899/article/details/85048026
<div class="myclass" tip = "thistip"></div>
<div class="myclass2" tip = "twotip"></div>
<div class="myclass" tip = "threetip"></div>
在在查找div時,需要獲取到class名爲“myclass2”的div的前一個class名爲“myclass”的div。可以這樣寫:
$(".myclass2").siblings(".myclass[tip = "thistip"]");