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<script>(function($){$.fn.snow = function(options){var $flake = $('<div id="snowbox" />').css({'position': 'absolute','z-index':'9999', 'top': '-50px'}).html('❄'),documentHeight= $(document).height(),documentWidth= $(document).width(),defaults = {minSize:10,maxSize:20,newOn:1000,flakeColor: "#AFDAEF"},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,maxSize:50,newOn:300});});</script>把上面代码直接放入你想要放入的地方,当然也可以直接放入你的js文件中(ps:主要要去掉<script></script>)
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