从CSDN下载的迅雷的滑动门资料，这段代码看不懂，谁能帮助下

[zc1821]

谁能解释下，谢谢了，我看不懂这些：红色的都看不懂
function showSwitchNav(screen) {
var NavStr = "" ;
for (i=1;i<=MaxScreen;i++) {
if (i == screen) {
NavStr += '<li onmouseover="pauseSwitch();"

onmouseout="goonSwitch();"><a href="javascript://" target="_self"

class="sel">'+i+'</a></li>' ; }
else {
NavStr += '<li onmouseover="pauseSwitch();"

onmouseout="goonSwitch();" onclick="goManSwitch('+i+');"><a

href="javascript://" target="_self">'+i+'</a></li>' ;
}

}
document.getElementById("SwitchNav").innerHTML = NavStr ;}

[zc1821]

NavStr += '<li onmouseover="pauseSwitch();"

onmouseout="goonSwitch();"><a href="javascript://" target="_self"

class="sel">'+i+'</a></li>'

这怎么理解啊，怎么有 '<li
不懂

[乌镇程序员]

function showSwitchNav(screen) {
    var NavStr = "";
    for (i = 1; i <= MaxScreen; i++) {
        if (i == screen) {
            NavStr += '<li onmouseover="pauseSwitch();" onmouseout="goonSwitch();"><a href="javascript://" target="_self" class="sel">' + i + '</a></li>';
        }
        else {
            NavStr += '<li onmouseover="pauseSwitch();" onmouseout="goonSwitch();" onclick="goManSwitch(' + i + ');"><a href="javascript://" target="_self">' + i + '</a></li>';
        }
    }
    document.getElementById("SwitchNav").innerHTML = NavStr;
}

美化一下，这样就能看懂了吧，for循环体中就是分两种情况拼接一个字符串啊。

[rczjp]

拼接HTML代码

[zhang98722]

将li的代码拼接到NavStr的字符串中
然后输出到id名字叫SwitchNav元素里面