JS 黑客帝国文字下落效果

浏览数：133 / 时间：2015年06月09日

黑客帝国文字下落效果

源代码如下：

<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title>黑客帝国文字下落</title>
        <style>
        html, body {margin:0; padding:0; background-color:#000;}
        #divList {width:800px; height:500px; border:solid 3px gray; margin: 0px auto; overflow:hidden; position: relative;}
        .divText {position: absolute;}
        .divText span {display:block; font-weight: bold; font-family:Courier New; }
        </style>
        <script src="http://apps.bdimg.com/libs/jquery/1.9.0/jquery.min.js"></script>
    </head>
    <body>
    <h1 style="text-align:center; color:gray;">黑客帝国文字下落 (<span id="spanCount">0</span>)</h1>
    <div id="divList">
    
    </div>
    <script>
    function rand(min, max)
    {
        return min + Math.round(Math.random() * (max - min));
    }
    
    function add()
    {
        var x = rand(0, 800);
        var html = ‘<div class="divText" style="left:‘ + x + ‘px; bottom:500px;">‘;
        var c = rand(33, 127);
        var c = String.fromCharCode(c);
        
        /*
        var color1 = [];
        var color2 = [];
        var color3 = [];
        var color4 = [];
        var color5 = [];
        var color6 = [];
        
        for (var i=1; i<17; i++)
        {
            var f = i.toString(16);
            color1.push(‘0‘ + f + ‘0‘);
            color2.push(f + ‘00‘);
            color3.push(‘00‘ + f);
            color4.push(‘0‘ + f + f);
            color5.push(f + f + ‘0‘);
            color6.push(f + ‘0‘ + f);
        }
        var color = [color1, color2, color3, color4, color5, color6];
        var ci = rand(0, 5);
        */
        
        var color = [];
        for (var i=1; i<17; i++)
        {
            var f = i.toString(16);
            color.push(‘0‘ + f + ‘0‘);
        }
        
        var fontSize = rand(9, 24);
        for (var i=1; i<17; i++)
        {
            // html += ‘<span class="s‘ + i + ‘" style="color:#‘ + color[ci][i-1] + ‘; font-size:‘ + fontSize + ‘px;">‘ + c + ‘</span>‘;
            html += ‘<span class="s‘ + i + ‘" style="color:#‘ + color[i-1] + ‘; font-size:‘ + fontSize + ‘px; text-shadow:0px 0px 5px #‘ + color[i-1] + ‘;">‘ + c + ‘</span>‘;
        }
        html += ‘</div>‘;
        $(‘#divList‘).append(html);
    }
    
    function run()
    {
        var x = rand(0, 100);
        if (x < 100)
        {
            add();
        }
        $(‘#spanCount‘).html($(‘.divText‘).size());
        
        $(‘.divText‘).each(function(){
            var y = $(this).css(‘bottom‘);
            y = parseInt(y);
            y -= $(this).find(‘span‘).eq(0).height();
            $(this).css(‘bottom‘, ‘‘ + y + ‘px‘);
            if (y + $(this).height() <= 0)
            {
                $(this).remove();
            }
        });
        
        window.setTimeout(run, 50);
    }
    run();
    </script>
    </body>
</html>