html:
js
var box = document.getElementById('box');
box.addEventListener("click",function(e){
var ev = event ||window.event;
ev.stopPropagation();
wave = document.querySelector(".wave");
removeElement(wave);
var _wave = document.createElement("p");
},true);
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楼上这个写的也不对呀,用事件代理了之后就得判断当前对象是不是dt,是的话再用innerHTML给对应的dt添加子元素