html+css+javascript学习记录1

Posted 2020-11-23 jlfw

tags:

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<p> 最近在学一部分前端，知识点很多，却没怎么系统地应用过，因而理解可能不够深吧。所以我想做点片段似的东西，不懂的再在网上搜一搜，这样可能会更有意思点，所以做了这个记录，希望自己坚持下去！</p>

Mytodolist

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>MyTodolist</title>
<link href="./css/todolist.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="js/todolist.js"></script>
</head>
<body>
<div id="title">
        <span>My todolist</span><input name="thing" class="blank" type="text" value="add a thing here" onclick="clearText()" onblur="addThing()"/>
</div>
<div id="content">
    <div class="do">
        <p>未完成<input name="usum" class="circle" type="text" value="0"/></p>
        <ul name="undo"></ul>
    </div>
    <div class="do">
        <p>已完成<input name="dsum" class="circle" type="text" value="0"/></p>
        <ul name="done"></ul>
    </div>
    <div class="do btnarea">
        <input class="clear" type="button" value="全选" onclick="selectAll()"/>
        <input class="clear" type="button" value="反选" onclick="oppositeAll()"/>
        <input class="clear" type="button" value="清除" onclick="clearAll()"/>
    </div>
</div>
</body>
</html>

css code:

@CHARSET "UTF-8";
/*
    two colors to use:
    rgba(100,147,235,1.0)
    rgba(222,184,134,1.0)
*/
html,body,div,applet,object,iframe,
h1,h2,h3,h4,h5,h6,p,blockquote,pre,
a,abbr,acronym,address,big,cite,code,
del,dfn,em,font,img,ins,kbd,q,s,samp,
small,strike,strong,sub,sup,tt,var,
b,u,i,center,
dl,dt,dd,ol,ul,li,
fieldset,form,label,legend,
table,caption,tbody,tfoot,thead,tr,th,td {
    margin: 0;
    padding: 0;
    border: 0;
    outline: 0;
    /*font-size: 100%; /*字体默认大小*/
    font-size:18px;
    vertical-align: transparent;
    background: transparent;
    font-family:Arial;
}
body{line-height: 1;}
ol,ul{list-style: none;}
blockquote,q{quotes: none;}
blockquote:before,blockquote:after,q:before,q:after{content: ‘‘;content: none;}
a{text-decoration: none;}
#title{
    background-color:rgba(100,147,235,1.0);
    text-align:center;
    height:50px;
}
#content{
    background-color:rgba(220,220,220,1.0);
    min-height:700px;
}
span{
    display:inline-block;
    width:150px;
    height:50px;
    line-height:50px;
    text-align:left;    
}
.blank{
    width:350px;
    height:20px;
    color:gray;
    border:0px;
}
.do{
    width:500px;
    min-height:100px;
    position:relative;
    left:425px;
}
p{
    height:50px;
    line-height:50px;
    font-family:微软雅黑;
    font-weight:bold;
}
li{
    background-color:rgba(222,184,134,1.0);
    height:25px;
    line-height:25px;
    margin-left:25px;
    margin-bottom:10px;
    border-radius:5px;/*设置成圆角 */
    border-bottom:1px solid black;
}
label{
    font-family:微软雅黑;
    font-size:14px;
}
.clear{
    width:50px;
    height:30px;
    font-family:微软雅黑;
    font-size:14px;
    font-weight:bold;
    border-radius:5px;
    border-bottom:1px solid black;
    background-color:lightblue;
}
.btnarea{
    text-align:right;
}
b{
    font-size:8px;
    display:inline-block;
    float:right;
    color:blue;
}
.circle{
    width:20px;
    height:20px;
    border-radius:20px;
    border:1px solid lightgray;
    text-align:center;
    font-size:15px;
    font-weight:bold;
    position:relative;
    left:425px;
    background-color:rgb(232,232,241);
    font-family:Arial;
}

js code:

function clearText() {
    var nodes = document.getElementsByName("thing");
    var inputNode = nodes[0];
    inputNode.value = "";
}
function addThing() {
    var nodes = document.getElementsByName("thing");
    var inputNode = nodes[0];
    var text = inputNode.value
    if (text != "") {
        var undoUl = document.getElementsByName("undo")[0];
        undoUl.innerHTML += "<li><input name=‘item‘ type=‘checkbox‘/><label>"
                + text
                + "</label><b>done<input type=‘radio‘ onclick=‘todone(this)‘/></b></li>";
        var circleNode = document.getElementsByName("usum")[0];
        circleNode.value = parseInt(circleNode.value) + 1;
    }
    inputNode.value = "add a thing here";
}
function clearAll() {
    var nodes = document.getElementsByName("item");
    var len = nodes.length;
    var circleNode1 = document.getElementsByName("usum")[0];
    var circleNode2 = document.getElementsByName("dsum")[0];
    for (var i = 0; i < len; i++) {
        if (nodes[i].checked) {
            var liNode = nodes[i].parentNode;
            var ulNode = liNode.parentNode;
            ulNode.removeChild(liNode);
            i--;
            len--;
            var name = ulNode.attributes[0].value;
            if (name == "undo")
                circleNode1.value--;
            else
                circleNode2.value--;
        }
    }
}
function selectAll() {
    var nodes = window.document.getElementsByName("item");
    for (var i = 0; i < nodes.length; i++) {
        nodes[i].checked = true;
    }
}
function oppositeAll() {
    var nodes = document.getElementsByName("item");
    for (var i = 0; i < nodes.length; i++) {
        var before = nodes[i].checked;
        nodes[i].checked = !before;
    }
}
function todone(param) {
    var liNode = param.parentNode.parentNode;
    param.parentNode.innerHTML = "undo<input type=‘radio‘ onclick=‘toundo(this)‘/>";
    var ulNode = document.getElementsByName("done")[0];
    ulNode.appendChild(liNode);
    var circleNode = document.getElementsByName("usum")[0];
    var sum = parseInt(circleNode.value)
    if (sum > 0) {
        circleNode.value = sum - 1;
    }
    circleNode = document.getElementsByName("dsum")[0];
    circleNode.value = parseInt(circleNode.value) + 1;
}
function toundo(param) {
    var liNode = param.parentNode.parentNode;
    param.parentNode.innerHTML = "done<input type=‘radio‘ onclick=‘todone(this)‘/>";
    var ulNode = document.getElementsByName("undo")[0];
    ulNode.appendChild(liNode);
    var circleNode = document.getElementsByName("dsum")[0];
    var sum = parseInt(circleNode.value)
    if (sum > 0) {
        circleNode.value = sum - 1;
    }
    circleNode = document.getElementsByName("usum")[0];
    circleNode.value = parseInt(circleNode.value) + 1;
}

仿导航条效果
(1) 鼠标悬停时切换展示内容
(2) 自动轮播展示内容
(3) 清除自动展示

html code:

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>导航条效果</title>
</head>
<body>
    <div id="nav">
        <div id="stop">
            <input type="button" value="停止轮播" onclick="notAuto()" />
        </div>
        <div id="title">
            <ul>
                <li class="over" onmouseover="moveTo(‘c1‘)"><label>为你推荐</label></li>
                <li onmouseover="moveTo(‘c2‘)"><label>电子</label></li>
                <li onmouseover="moveTo(‘c3‘)"><label>轻音乐</label></li>
                <li onmouseover="moveTo(‘c4‘)"><label>经典</label></li>
                <li onmouseover="moveTo(‘c5‘)"><label>热门游戏</label></li>
                <li onmouseover="moveTo(‘c6‘)"><label class="noborder">情歌</label></li>
            </ul>
        </div>
        <div id="content">
            <div id="c1">
                <div class="inner">
                    <img src="img/1.png" />
                    <p>
                        <a href="">每日新歌:郑容和写给你的情书</a>
                    </p>
                    <p>
                        <a href="" class="below">播放量: 14.1万</a>
                    </p>
                </div>
                <div class="inner">
                    <img src="img/2.png" />
                    <p>
                        <a href="">[知味沧桑]&nbsp;&nbsp;历经岁月才能体会</a>
                    </p>
                    <p>
                        <a href="" class="below">播放量: 9.0万</a>
                    </p>
                </div>
            </div>
            <div id="c2" style="display: none">
                <div class="inner">
                    <img src="img/3.png" />
                    <p>
                        <a href="">催眠系Chillout&nbsp;&nbsp;星空遐想氛围</a>
                    </p>
                    <p>
                        <a href="" class="below">播放量: 2.2万</a>
                    </p>
                </div>
                <div class="inner">
                    <img src="img/4.png" />
                    <p>
                        <a href="">历史老师推荐盛世民俗必听古风</a>
                    </p>
                    <p>
                        <a href="" class="below">播放量: 16.9万</a>
                    </p>
                </div>
            </div>
            <div id="c3" style="display: none">
                <div class="inner">
                    <img src="img/5.png" />
                    <p>
                        <a href="">令人心跳加速的的甜蜜日漫片尾曲</a>
                    </p>
                    <p>
                        <a href="" class="below">播放量: 69.0万</a>
                    </p>
                </div>
                <div class="inner">
                    <img src="img/6.png" />
                    <p>
                        <a href="">历史老师推荐盛世民俗必听古风</a>
                    </p>
                    <p>
                        <a href="" class="below">播放量: 16.9万</a>
                    </p>
                </div>
            </div>
            <div id="c4" style="display: none">
                <div class="inner">
                    <img src="img/7.png" />
                    <p>
                        <a href="">令人心跳加速的的甜蜜日漫片尾曲</a>
                    </p>
                    <p>
                        <a href="" class="below">播放量: 69.0万</a>
                    </p>
                </div>
                <div class="inner">
                    <img src="img/8.png" />
                    <p>
                        <a href="">历史老师推荐盛世民俗必听古风</a>
                    </p>
                    <p>
                        <a href="" class="below">播放量: 16.9万</a>
                    </p>
                </div>
            </div>
            <div id="c5" style="display: none">
                <div class="inner">
                    <img src="img/9.png" />
                    <p>
                        <a href="">令人心跳加速的的甜蜜日漫片尾曲</a>
                    </p>
                    <p>
                        <a href="" class="below">播放量: 69.0万</a>
                    </p>
                </div>
                <div class="inner">
                    <img src="img/10.png" />
                    <p>
                        <a href="">历史老师推荐盛世民俗必听古风</a>
                    </p>
                    <p>
                        <a href="" class="below">播放量: 16.9万</a>
                    </p>
                </div>
            </div>
            <div id="c6" style="display: none">
                <div class="inner">
                    <img src="img/11.png" />
                    <p>
                        <a href="">令人心跳加速的的甜蜜日漫片尾曲</a>
                    </p>
                    <p>
                        <a href="" class="below">播放量: 69.0万</a>
                    </p>
                </div>
                <div class="inner">
                    <img src="img/12.png" />
                    <p>
                        <a href="">历史老师推荐盛世民俗必听古风</a>
                    </p>
                    <p>
                        <a href="" class="below">播放量: 16.9万</a>
                    </p>
                </div>
            </div>
        </div>
    </div>
</body>
</html>

css code:

<style type="text/css">
* {
    margin: 0;
    padding: 0;
    list-style-type: none;
    font: 14px Arial, Helvetica, sans-serif, "新宋体", "微软雅黑";
}

#title {
    width: 720px;
    height: 50px;
    margin: 0px auto 0 auto;
}

#title li {
    float: left;
    width: 120px;
    height: 50px;
    background: lightgreen;
}

#title li label {
    display: block;
    margin: 15px auto;
    text-align: center;
    border-right: 1px solid gray;
}

#title li label.noborder {
    border: none;
}

#content {
    width: 720px;
    height: 370px;
    margin: 15px auto;
    background: lightyellow;
    border: 1px dashed black;
    border-radius: 20px;
}

#content div {
    width: 100%;
    height: 100%;
}

#title li.over {
    background: green;
    color: white;
}

#stop {
    width: 720px;
    height: 80px;
    margin: 50px auto 0 auto;
    position: relative;
}

#stop input {
    width: 80px;
    height: 30px;
    background: lightyellow; border-bottom : 1px solid black;
    border-radius: 10px;
    position: absolute;
    right: 0;
    bottom: 30px;
    cursor: pointer;
    border-bottom: 1px solid black;
}

#content .inner {
    width: 360px;
    height: 370px;
    float: left;
}

img {
    display: block;
    margin: 20px auto;
}

p {
    width: 268px;
    margin: 10px auto;
}

a {
    text-decoration: none;
    color: black;
}

a.below {
    color: darkgray;
}

a:hover {
    color: green;
}
</style>

js code:

<script type="text/javascript">
    var scrollTime = 2000;
    var intervalId;
    var count = 0;
    window.onload = function() {
        var args = [ ‘c1‘, ‘c2‘, ‘c3‘, ‘c4‘, ‘c5‘, ‘c6‘ ];
        intervalId = setInterval(func, scrollTime);
        function func() {
            moveTo(args[count]);
        }
    }
    function notAuto() {
        clearInterval(intervalId);
    }
    function moveTo(param) {
        //first
        var liNodes = document.getElementsByTagName("li");
        for (var i = 0; i < liNodes.length; i++) {
            liNodes[i].className = "";
            if (i < liNodes.length - 1)
                liNodes[i].childNodes[0].className = "";
        }
        var index = parseInt(param.charAt(1)) - 1;
        var liNode = liNodes[index];
        liNode.className = "over";
        liNode.childNodes[0].className = "noborder";
        if (index > 0) {
            liNodes[index - 1].childNodes[0].className = "noborder";
        }
        //second
        for (var i = 1; i <= 6; i++) {
            var all = ‘c‘ + i;
            var div = document.getElementById(all);
            div.style.display = "none";
        }
        var divNode = document.getElementById(param);
        divNode.style.display = "block";
        count = (index + 1) % 6;
    }
</script>

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