XIUNO带你看下雪

代码可放到全局内容页尾（全局 : html > body ( footer_js_after )）或者某个页面

依照本站XIUNOO主题为例：路劲 plugin/zaesky_theme_xiunoo/hook/footer_js_after

代码如下：

<script type="text/javascript">
(function($){
    $.fn.snow = function(options){
    var $flake = $('<div id="snowbox" />').css({'position': 'absolute','z-index':'9999', 'top': '-50px'}).html('&#10052;'),
    documentHeight     = $(document).height(),
    documentWidth    = $(document).width(),
    defaults = {
        minSize        : 10,
        maxSize        : 20,
        newOn        : 1000,
        flakeColor    : "#AFDAEF" /* 此处可以定义雪花颜色，若要白色可以改为#FFFFFF */
    },
    options    = $.extend({}, defaults, options);
    var interval= setInterval( function(){
    var startPositionLeft = Math.random() * documentWidth - 100,
    startOpacity = 0.5 + Math.random(),
    sizeFlake = options.minSize + Math.random() * options.maxSize,
    endPositionTop = documentHeight - 200,
    endPositionLeft = startPositionLeft - 500 + Math.random() * 500,
    durationFall = documentHeight * 10 + Math.random() * 5000;
    $flake.clone().appendTo('body').css({
        left: startPositionLeft,
        opacity: startOpacity,
        'font-size': sizeFlake,
        color: options.flakeColor
    }).animate({
        top: endPositionTop,
        left: endPositionLeft,
        opacity: 0.2
    },durationFall,'linear',function(){
        $(this).remove()
    });
    }, options.newOn);
    };
})(jQuery);
$(function(){
    $.fn.snow({ 
        minSize: 5, /* 定义雪花最小尺寸 */
        maxSize: 50,/* 定义雪花最大尺寸 */
        newOn: 100  /* 定义密集程度，数字越小越密集 */
    });
});
</script>