jQuery练习_新浪微博

jQuery学习

创建时间:2020-07-24 00:59

字数:823 阅读:

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jQuery练习_新浪微博

jQuery练习_新浪微博

完成效果图

主体结构

主体结构图
背景图
文本框

输入框
左边栏
右边栏

index.css

*{
    margin: 0;
    padding: 0;
}
html,body{
    width: 100%;
    height: 100%;
}
body{
    background: url("../images/body_bg.jpg") no-repeat center 0;
}
.nav{
    width: 100%;
    height: 48px;
}
.nav>img{
    width: 100%;
}
.content{
    width: 1000px;
    height: auto;
    overflow: hidden;
    background: #ebdbd4;
    margin: 200px auto 0 auto;
}
.content>.left{
    float: left;
    width: 150px;
}
.content>.right{
    float: right;
    width: 240px;
}
.content>.center{
    float: left;
    width: 600px;
    height: 168px;
    background: url("../images/comment.png") no-repeat 0 0;
    background-size: 600px 168px;
}
.center>.comment{
    width: 570px;
    height: 73px;
    margin-top: 45px;
    margin-left: 15px;
    /*background: red;*/
    resize: none;
    border: none;
    outline: none;
}
.center>.send{
    width: 82px;
    height: 30px;
    margin-top: 4px;
    margin-left: 506px;
    border: none;
    background: #fd8040;
    color: white;
}
.content>.messageList{
    width: 600px;
    background: white;
    float: left;
}
.messageList>.info{
    padding: 10px 20px;
    border-bottom: 2px solid #ccc;
}
.info>.infoText{
    line-height: 25px;
    margin-bottom: 10px;
}
.info>.infoOperation{
    width: 100%;
    overflow: hidden;
}
.infoOperation>.infoTime{
    float: left;
    font-size: 13px;
    color: #ccc;
}
.infoOperation>.infoHandle{
    float: right;
    font-size: 13px;
}
.infoHandle>a{
    text-decoration: none;
    color: #ccc;
    background: url("../images/icons.png") no-repeat 0 0;
    padding-left: 25px;
    margin-left: 10px;
}
.infoHandle>a:nth-child(2){
    background-position: 0 -17px;
}
.infoHandle>a:nth-child(3){
    background-position: 0 -33px;
}
.page{
    width: 1000px;
    height: 40px;
    background: #9f5024;
    margin: 0 auto;
    text-align: right;
    padding: 10px;
    box-sizing: border-box;
}
.page>a{
    text-decoration: none;
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 1px solid #ccc;
    text-align: center;
    line-height: 20px;
    color: #2b2b2b;
}

index.js

$(function () {
    // 0.监听内容的时时输入
    $("body").delegate(".comment","propertychange input", function () {
        // 判断是否输入了内容
        if($(this).val().length > 0){
            // 让按钮可用
            $(".send").prop("disabled", false);
        }else{
            // 让按钮不可用
            $(".send").prop("disabled", true);
        }
    });
    // 1.监听发布按钮的点击
    $(".send").click(function () {
        // 拿到用户输入的内容
        var $text = $(".comment").val();
        // 根据内容创建节点
        var $weibo = createEle($text);
        // 插入微博
        $(".messageList").prepend($weibo);
    });

    // 2.监听顶点击
    $("body").delegate(".infoTop", "click", function () {
        $(this).text(parseInt($(this).text()) + 1);
    });
    // 3.监听踩点击
    $("body").delegate(".infoDown", "click", function () {
        $(this).text(parseInt($(this).text()) + 1);
    });
    // 4.监听删除点击
    $("body").delegate(".infoDel", "click", function () {
        $(this).parents(".info").remove();
    });

    // 创建节点方法
    function createEle(text) {
        var $weibo = $("<div class=\"info\">\n" +
            "            <p class=\"infoText\">"+text+"</p>\n" +
            "            <p class=\"infoOperation\">\n" +
            "                <span class=\"infoTime\">"+formartDate()+"</span>\n" +
            "                <span class=\"infoHandle\">\n" +
            "                    <a href=\"javascript:;\" class='infoTop'>0</a>\n" +
            "                    <a href=\"javascript:;\" class='infoDown'>0</a>\n" +
            "                    <a href=\"javascript:;\" class='infoDel'>删除</a>\n" +
            "                </span>\n" +
            "            </p>\n" +
            "        </div>");
        return $weibo;
    }

    // 生成时间方法
    function formartDate() {
        var date = new Date();
        // 2018-4-3 21:30:23
        var arr = [date.getFullYear() + "-",
            date.getMonth() + 1 + "-",
            date.getDate() + " ",
            date.getHours() + ":",
            date.getMinutes() + ":",
            date.getSeconds()];
        return arr.join("");

    }
});

index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>新浪微博</title>
    <link rel="stylesheet" href="css/index.css">
    <script src="js/jquery-1.12.4.js"></script>
    <script src="js/index.js"></script>
</head>
<body>
<div class="nav">
    <img src="images/nav.png" alt="">
</div>

<div class="content">
    <img src="images/left.png" alt="" class="left">
    <div class="center">
        <textarea class="comment"></textarea>
        <input type="button" value="发布" class="send" disabled>
    </div>
    <img src="images/right.png" alt="" class="right">
    <div class="messageList"></div>
</div>
<div class="page">
    <a href="javascript:;">1</a>
    <a href="javascript:;">2</a>
    <a href="javascript:;">3</a>
</div>
</body>
</html>