Jquery特效十:新闻纵向滚动、淡入淡出

    技术2025-08-01  8

    效果图及代码如下:<html xmlns="http://www.w3.org/1999/xhtml"><head>    <title></title>    <script src="../Scripts/jquery-1.4.1.js" type="text/javascript"></script><script src="jqNews.js" type="text/javascript"></script>    <link href="style.css" rel="stylesheet" type="text/css" /></head><body>   <div>        <div id="jqnews">            <div><a href="#">Tutto su msn</a><br />                <img src="images/amsn.png" />            </div>            <div>                <a href="#">Nuove fotocamere da 150 Mila px</a><br />                <img src="images/camera.png" />            </div>            <div>                <a href="#">Accesso Negato</a> <br />                <img src="images/error.png" />Cosa fare?            </div>            <div>                <a href="#">Nuovo sw per Note</a> <br />                <img src="images/knotes.png" />            </div>            <div>                <a href="#">Trovare casa</a> <br />                <img src="images/kfm_home.png" />            </div>            <div>                <a href="#">Ms-Dos</a> <br />                <img src="images/konsole.png" />            </div>        </div>    </div><br />

    </body></html>

    jqNews.js:

    /** JqNews - JQuery NewsTicker* Author: Gravagnola Saverio and Iuliano Renato* Version: 1.0*/

    var newsVisual = 4; // Numero di news da visualizzare - news to be displayedvar intervallo = 5000; // >1500

    $(document).ready(function() {    // Totale news    var numNews = $("#jqnews").children().length;        // Controllo di overflow    if (newsVisual > numNews) {        newsVisual = numNews;    }

        // Hide delle news superflue all'inizializzazione    for (var i = newsVisual; i < numNews; i++) {        $($("#jqnews").children()[i]).css("opacity", "0");    }        var gestInter = setInterval(jqNewsRotate, intervallo);

        // Gestione del mouseover-mouseout    $("#jqnews").mouseover(function() { clearInterval(gestInter) });    $("#jqnews").mouseout(function() { gestInter = setInterval(jqNewsRotate, intervallo); });});

    function jqNewsRotate(_newsVisual) {

        // Inserire lo stesso valore utilizzato per definire l'altezza ed i margini dei div nel file css/style.css    var altezzaDiv = -118;     var margineDiv = 5;

        // Hide della prima news    $($("#jqnews").children()[0]).animate({ opacity: 0 }, 1000, "linear", function() {    // Movimento verso l'alto        $($("#jqnews").children()[0]).animate({ marginTop: altezzaDiv }, 1000, "linear", function() {        // Ripristino posizione elemento nascosto            $($("#jqnews").children()[0]).css("margin", margineDiv);            // Spostamento in coda dell'elemento nascosto            $("#jqnews").append($($("#jqnews").children()[0]));            // Visualizzazione dell'ultima news            $($("#jqnews").children()[(newsVisual - 1)]).animate({ opacity: 1 }, 1500);        });    });}

     

    style.css:#jqnews{ overflow: hidden; height: 500px;  width: 160px; border: solid 1px #000;}

    #jqnews div{ display: block; overflow: hidden; background-color: #def; height: 118px; width: 150px; margin: 5px;}

    #jqnewsVert{ overflow: hidden; height: 500px; width: 160px; border: solid 1px #000; margin:auto;}

    #jqnewsVert div{ display: block; overflow: hidden; background-color: #def; height: 118px; width: 150px; margin: 5px;}

    #jqnewsOriz{ border: solid 1px #000; height: 130px; width: 650px; overflow: hidden; margin:auto;}

    #jqnewsOriz div{ float:left; border: solid 1px #000; background: #def; height: 118px; width: 150px; margin: 5px; display:block;}

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