87,907
社区成员
发帖
与我相关
我的任务
分享
<ul>
<li><a id="subcatalog0" href="" data-nav-down="subcatalog1">影坛快讯</a></li>
<li><a id="subcatalog1" href="" data-nav-down="subcatalog2">精彩预告</a></li>
<li><a id="subcatalog2" href="" data-nav-down="subcatalog3">新片上映</a></li>
<li><a id="subcatalog3" href="" data-nav-down="subcatalog4">首播大片</a></li>
<li><a id="subcatalog4" href="" data-nav-down="subcatalog5">热播影院</a></li>
<li><a id="subcatalog5" href="" data-nav-down="subcatalog6">经典影院</a></li>
<li><a id="subcatalog6" href="" data-nav-down="subcatalog7">欧美电影</a></li>
<li><a id="subcatalog7" href="">高清电影</a></li>
</ul>
for(var i = 0; i < 8; i++)
{
document.getElementById("subcatalog" + i).onfocus = function()
{
window.alert(i); //这里是8,如何弹出1或2...
}
}
//如果写成这样也不行
for(var i = 0; i < 8; i++)
{
document.getElementById("subcatalog" + i).onfocus = function(i)
{
window.alert(i); //这里Event对象
}
}
for(var i = 0; i < 8; i++)
{
(function(i){
document.getElementById("subcatalog" + i).onfocus = function()
{
window.alert(i); //这里是8,如何弹出1或2...
}
})(i)
}
这样写会立即执行
for(var i = 0; i < 8; i++)
{
(function(i){
document.getElementById("subcatalog" + i).onfocus = function()
{
window.alert(i); //这里是8,如何弹出1或2...
}
})(i)
}
for(var i=0;i<8;i++){
(function(i){
document.getElementById("subcatalog" + i).onfocus=function(){
alert(i);
}
})(i);
}
1楼的应该会马上执行吧
for(var i = 0; i < 8; i++)
{
document.getElementById("subcatalog" + i).onmouseover = function(i)
{
return function(){alert(i)}; //这里是8,如何弹出1或2...
}(i);
}