jsDOM如何同时选中几个节点

Question

比如说同时选中table标签下的thead与tbody

Answer 1

<h3> h3 元素</h3><h2> h2 元素</h2><script>&nbsp; var eles = document.querySelectorAll("h2, h3");&nbsp; var length = eles.length;&nbsp; for(var i=0; i<length; i++) {&nbsp; &nbsp; &nbsp; eles[i].style.background = 'red';&nbsp; }</script>