javaScript操作DOM对象第三章

第一题

.scroll{width: 360px; height: 190px; overflow: hidden; margin: 0 auto; position: relative;}
a{
    font-size: 14px;
    color: #39F;
    height: 18px;
    width: 20px;
    border: 1px solid #39F;
    text-decoration: none;
    display: block;
    float: left;
    margin-right:5px;
    text-align: center;
    background-color: #FFF;
    line-height: 20px;
}
a:hover {
    font-size: 14px;
    font-weight: bold;
    color: #FFF;
    background-color: #39F;
    border: 1px solid #39F;
    text-decoration: none;
    display: block;
}
#num {
    position:absolute;
    width:180px;
    height:25px;
    z-index:2;
    top: 160px;
    left: 100px;
}

<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title>图片轮换</title>
    <link rel="stylesheet" href="css/作业一.css">
</head>
<body>
<div class="scroll">
    <div id="num">
        <a href="#" onmouseover="down(1)">1</a>
        <a href="#" onmouseover="down(2)">2</a>
        <a href="#" onmouseover="down(3)">3</a>
        <a href="#" onmouseover="down(4)">4</a>
        <a href="#" onmouseover="down(5)">5</a>
    </div>
    <img src="图片/1.gif" alt="图片" id="photo"/>
</div>
<script>
    function down(num) {
        var it=document.getElementById("photo");
        if(num==1){
            it.setAttribute("src","图片/1.gif")
        }else if(num==2){
            it.setAttribute("src","图片/2.gif")
        }else if(num==3){
            it.setAttribute("src","图片/3.jpg")
        }else if(num==4){
            it.setAttribute("src","图片/4.jpg")
        }else {
            it.setAttribute("src","图片/5.gif")
        }
    }
</script>
</body>
</html>

第二题

<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title>上传文件</title>
    <style>
        #main{margin:0 auto; width: 500px;}
        dl{clear: both; width: 100%;}
        dt{
            float: left;
            width: 100px;
            text-align: right;
        }
    </style>
</head>
<body>
<div id="main">
            <dl>
        <dt>文件路径：</dt>
        <dd><input name="fileImages" type="file" /></dd>
    </dl>
    <dl>
        <dt>文件路径：</dt>
        <dd><input name="fileImages" type="file" /></dd>
    </dl>
    <dl>
        <dt>文件路径：</dt>
        <dd><input name="fileImages" type="file" /></dd>
    </dl>
    <dl>
        <dt>文件路径：</dt>
        <dd><input name="fileImages" type="file" /></dd>
    </dl>
    <div id="addBtn"><input id="up" type="button" value="再上传一个文件" /></div>
</div>
</body>
</html>

第三题

*{
    margin:0;
    padding: 0;
    font-family: "Arial";
    font-size: 12px;
    line-height: 23px;
}
ul,li{
    list-style: none;
}
li{
    float: left;
    margin-right: 1px;
}
.div_bg{
    background-image:url(../图片/bg.jpg);
    background-repeat:no-repeat;
    width:169px;
    height:290px;
    margin-top: 0px;
    margin-right: auto;
    margin-bottom: 0px;
    margin-left: auto;
    padding: 50px 0 0 15px;
}
.div_bg div{
    clear: both; padding-top: 10px;
}
.white{
    font-size:12px;
    color:#FFFFFF;
    padding-top:2px;
    cursor:pointer;
}
.white:hover{
    font-size:12px;
    color:#FFFFFF;
    padding-top:2px;
    cursor:pointer;
}
a {
    color: #06329b;text-decoration: none;line-height:24px;
}
a:hover {
    color: #cc0000;text-decoration: none;line-height:24px;
}
.bg{
    background-image:url(../图片/menu1.gif);
    background-repeat:no-repeat;
    height:23px;
    width:47px;
    text-align:center;
}

.nobg{
    background-image:url(../图片/menu2.gif);
    background-repeat:no-repeat;
    height:23px;
    width:47px;
    text-align:center;
}

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="css/第三题.css">
</head>
<body>
<div class="div_bg">
    <ul>
        <li id="bg1"><a class="white">小说</a></li>
        <li id="bg2"><a class="white">非小说</a></li>
        <li id="bg3" ><a class="white">少儿</a></li>
    </ul>
    <div id="book1">
        <a  href="#" target=_blank>1.时间旅行者的妻子</a><br>
        <a   href="#" target=_blank>2.女心理师（下）</a><br>
        <a   href="#" target=_blank>3.鬼吹灯之精绝古城</a><br>
        <a   href="#" target=_blank>4.女心理师（上）</a><br>
        <a   href="#" target=_blank>5.小时候</a><br>
        <a   href="#" target=_blank>6.追风筝的人</a><br>
        <a   href="#" target=_blank>7.盗墓笔记2</a><br>
        <a   href="#" target=_blank>8.输赢</a>
    </div>
    <div id="book2">
        <a   href="#" target=_blank>1.人生若只如初见</a><br>
        <a   href="#" target=_blank>2.高效能人士的七个..</a><br>
        <a   href="#" target=_blank>3.求医不如求己</a><br>
        <a   href="#" target=_blank>4.人体使用手册</a><br>
        <a   href="#" target=_blank>5.孩子，把你的手给我</a><br>
        <a   href="#" target=_blank>6.别笑！我是英文单词书</a><br>
        <a   href="#" target=_blank>7.人体经络使用手册</a><br>
        <a   href="#" target=_blank>8.股市稳赚</a>
    </div>
    <div id="book3">
        <a   href="#" target=_blank>1.斯凯瑞金色童书・..</a><br>
        <a   href="#" target=_blank>2.哈利・波特与“混..</a><br>
        <a   href="#" target=_blank>3.不一样的卡梅拉（..</a><br>
        <a   href="#" target=_blank>4.它们是怎么来的</a><br>
        <a   href="#" target=_blank>5.五・三班的坏小子..</a><br>
        <a   href="#" target=_blank>6.男生日记</a><br>
        <a   href="#" target=_blank>7.哈利・波特与魔法石</a><br>
        <a   href="#" target=_blank>8.噼里啪啦丛书(全7册)</a>
    </div>
</div>
<script>
    document.getElementById("book2").style.display="none";
    document.getElementById("book3").style.display="none";
    var divArr = document.getElementsByName("book");
    function over(it,i) {
        it.className  = "bg";
        for(var j = 0; j < divArr.length; j++){
            if(j == i){
                divArr[j].style.display = "block";
            }else{
                divArr[j].style.display = "none";
            }
        }
    }
    function out(it) {
        it.className  = "nobg";
    }
</script>
</body>
</html>

javaScript操作DOM对象 第三章

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javaScript操作DOM对象第三章