JS实现定时自动消失的弹出窗口

2022-04-28 11:31:31 来源：易采站长站作者：

一、Demo.html

<!DOCTYPE html><html>    <head>        <meta charset="UTF-8">        <title>js弹框3秒后自动消失</title>        <link rel="stylesheet" type="text/css" href="./js/bootstrap/css/bootstrap.css" rel="external nofollow" />        <link rel="stylesheet" type="text/css" href="./css/demo.css" rel="external nofollow" />                </head>    <body>        <button onclick="showModal()">点击弹出模态框</button>                <div class='modal my-modal-alert' id='my-modal-alert'>            <div class='modal-dialog boxBodySmall'>                <div class='modal-content'>                    <div class='modal-header boxHeader'>                        <button type='button' class='close boxClose' data-dismiss='modal'>                            <span aria-hidden='true'></span><span class='sr-only'>Close</span>                        </button>                        <h4 class='modal-title boxTitle' id='modal-title'>模态框</h4>                    </div>                    <div class='modal-body' id='modal-body-alert'>                        <div id='modal_message'>js弹框自动消失案例</div>                        <span id='num'></span>                    </div>                    <div class='modal-footer boxFooter' id='modal-footer'>                        <button type='button' class='btn btn-default boxButton' data-dismiss='modal'>关闭</button>                        <button type='button' class='btn btn-primary boxButton'>保存</button>                    </div>                </div>            </div>        </div>                <script src="./js/jquery/jquery-1.11.2.js"></script>        <script src="./js/bootstrap/js/bootstrap.min.js"></script>        <script src="./js/jquery-ui/jquery-ui.min.js"></script>                <script>            var clearFlag = 0;            var count = 3;//设置3秒后自动消失            var showModal = function(){                $("#my-modal-alert").toggle();//显示模态框                                $("#my-modal-alert").draggable({//设置模态框可拖动（需要引入jquery-ui.min.js）                    handle: ".modal-header"                });                                clearFlag = self.setInterval("autoClose()",1000);//每过一秒调用一次autoClose方法            }                        var autoClose = function(){                if(count>0){                    $("#num").html(count + "秒后窗口将自动关闭");                    count--;                }else if(count<;                }            }        </script>    </body></html>

注意：1、bootstrap依赖于jquery,引入bootstrap前需要引入jquery

二、Demo.css

/*弹框本身(大)*/ .my-modal-alert .boxBodyBig{    width:496px;    height: 418px;}/*弹框本身(小)*/ .my-modal-alert .boxBodySmall{    width:412px;    height: 418px;}/*弹框头*/.my-modal-alert .boxHeader{    background-color: #f6f6f6;    border-bottom: #e5e5e5 1px;    height: 48px;} /*弹框标题*/ .my-modal-alert .boxTitle{    background-color: #f6f6f6;    color:#333333;    font-family:"SimHei";    font-size: 16px;}/*弹框头部分右侧关闭按钮*/.my-modal-alert .boxClose{    }.my-modal-alert .boxClose:hover{    color: #ff7800;}/*弹框按钮的父级元素块*/.my-modal-alert .boxFooter{    margin: auto;    text-align: center;    padding:24px 15px 24px 15px;    margin:0px 15px 0px 15px;}/*弹框按钮*/.my-modal-alert .boxButton{    font-family:"SimHei";    background-color:#ff7800;    width: 70px;    height: 30px;    color:white;    text-align:center;    line-height: 1;}/*已下为选用*//*弹框主题label框*/.my-modal-alert .boxLabel{    width:80px;    font-size: 14px;     font-family:'SimHei';    color: #999999;    }/*文本框*/.my-modal-alert .boxInput{    width:176px;    font-size: 14px;    color: #333333;}/*纯文本*/.my-modal-alert .boxText{    color:#ff7800;    font-family:'SimHei';    font-size: 12px;}.my-modal-alert .boxTextarea{    font-size: 12px;}.my-modal-alert .modal-body{    width: 400px;    height: 100px;    text-align: center;}.my-modal-alert .modal_message{    margin-top: 20px;    }

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