遍历节点.txt

<script>
    recursive(document, 0)

    function recursive(elem, tabSize) {
        for (var i = 0; i < elem.childElementCount; i++) {
            var child = elem.children[i];
            console.log(`${getTabString(tabSize)}${child.tagName.toLocaleLowerCase()}: ${child.text ? child.text: ''}`);
            recursive(child, tabSize + 1);
        }
    }

    function getTabString(tabSize) {
        var tabString = '';
        for (var i = 0; i < tabSize; i++) {
            tabString += '  ';
        }
        return tabString;
    }
</script>