<!DOCTYPE html><html><head><meta charset="UTF-8"><title>試驗</title></head><body><p id="demo"></p><script type="text/javascript">function aa(a,b){return a*b;}document.getElementById('demo').innerHTML=aa(5,6);</script></body></html>
<p id="demo"></p>放在<script></script>下方為什么不行了呢
車水
2018-05-06 11:46:21
