题解 | #dom 节点查找#
dom 节点查找
https://www.nowcoder.com/practice/74d74be449af4c66907fe2d6961c255c
通过while循环往一边找
function commonParentNode(oNode1, oNode2) {
let currentElement = oNode1;
while (currentElement) {
if (currentElement.contains(oNode2)) {
return currentElement;
}
currentElement = currentElement.parentNode;
if(currentElement === oNode2) {
return currentElement
}
}
return null
}
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