這么寫(xiě)為什么不行
<script type=text/javascript>
window.onload=function(){
var bo1=document.getElementById(box);
bo1.onmouseover=function(){
boc(1);
}
bo1.onmouseout=function(){
boc(0.3);}
}
function boc(ita)
{
var bo1=document.getElementById(box);
? ? bo1.style.opacity=ita;
}
</script>
2015-12-19
document.getElementById(box);沒(méi)加引號(hào)
還有瀏覽器可能不兼容opacity