Question

那位大虾能帮我解释一下这一段代码？ Javascript

<SCRIPT language="javascript">
var iShowMenu = -1;

function showsubmenu(sid)
{
whichEl = eval("submenu" + sid);
if (whichEl.style.display == "none")
{
if (iShowMenu != -1)
{
eval("submenu" + iShowMenu + ".style.display=\"none\";");
}

eval("submenu" + sid + ".style.display=\"\";");
iShowMenu = sid;
}
else
{
eval("submenu" + sid + ".style.display=\"none\";");
iShowMenu = -1;

}
}
</script>

Answer 1

//菜单显示

var iShowMenu = -1;

function showsubmenu(sid)
{
whichEl = eval("submenu" + sid); //拼接你所点击的目录ID
if (whichEl.style.display == "none"){ //如果当前目录没被显示
if (iShowMenu != -1){ //如果有下级菜单
eval("submenu" + iShowMenu + ".style.display=\"none\";"); //下级菜单隐藏
}
eval("submenu" + sid + ".style.display=\"\";"); //显示当前菜单
iShowMenu = sid; //设置变量iShowMenu值为当前菜单ID
}
else{ //如果当前目录已经被显示
eval("submenu" + sid + ".style.display=\"none\";"); //隐藏当前目录
iShowMenu = -1;//设置变量iShowMenu值为-1
}
}

Answer 2

大约是菜单显示的.不是全代码吧.