将标签变为数组
<div><span>1</span><span>2</span><span>3</span><span>4</span></div>
<div id="div1"><span>1</span><span>2</span><span>3</span><span>4</span></div><script type="text/javascript" > var ospans=document.getElementById("div1").getElementsByTagName("span"); var spanarr = new Array; alert(ospans.length); for (var i = 0; i < ospans.length; i++) { spanarr.push(ospans[i].innerHTML); } alert(spanarr.join(","));</script>