javascript打印dom树

复制粘贴下面的代码到控制台：

function render(node, splits) {splits.tag += '|----';console.log(splits.tag + node.tagName);var children = node.children;if (!children) return;for (var i = 0, len = children.length; i < len; i++) {var child = children[i];var _tag = splits.tag;render(child, splits);splits.tag = _tag;}}var splits = {tag:''}var start = (new Date()).getTime();render(document.body, splits);var end = (new Date()).getTime();console.log('Cost: ' + (end - start) + 'ms');

出处：http://blog.csdn.net/nancle/article/details/43054477