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<div> <div class="odd">1</div> <div class="even">2</div> <div class="odd">3</div> <div class="even">4</div> <div class="odd">5</div> <div class="even">6</div> </div> <div id="result"></div> <script> var odd = document.getElementsByClassName('odd'); var res = []; var i, len; for (i = 0, len = odd.length; i < len; i++) { res.push(odd[i].innerText); } var resultElement = document.getElementById('result'); resultElement.innerHTML = '所有奇数：<br>' + res.join('<br>'); </script>
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