CSS3 实现弹幕的示例代码前端实现弹幕效果的方法总结(包含css3和canvas的实现方式)css3实现蒙版弹幕功能

说两句

 .webPage .barrage{width:100%;height:22%;position: absolute; bottom: 50px; background-color: transparent;pointer-events: none;} .webPage .barrage .mask{width:100%;height:100%;background:transparent;z-index:100;}

 $scope.data = {comment:''}; $scope.danmuCount = 5; //最大弹幕行数 $scope.danmus = ['1545466666还是','9777777','哈哈哈哈哈','对企业读完后环球网好齐齐哈','42115我我我5','556噢噢噢噢45','54哦','54545646','666但近段时间66','56565','454465465565', '1545466666还是','9777777','哈哈哈哈哈','对企业读完后环球网好齐齐哈','42115我我我5','556噢噢噢噢45','54哦','54545646','666但近段时间66','56565','454465465565']; //弹幕数据源 //创建弹幕区域 $scope.createDanmuContent = function () { var height = 1 / $scope.danmuCount * 100 + '%'; for (var i = 0; i < $scope.danmuCount; i++) { var item = '
'; $('.mask').append(item); } $scope.createDanmu (); }; //开始弹幕绘制 $scope.createDanmu = function () { var maxCount = 0; if ($scope.danmus.length > $scope.danmuCount) { maxCount = $scope.danmuCount; } else { maxCount = $scope.danmus.length; } var _left = window.screen.width; for (var i = 0; i < maxCount; i++) { var _lable = $("
"+$scope.danmus[i]+"
"); $(".mask div").each(function () { //检测该区域是否绘制了弹幕 if ($scope.checkDanmu($(this))) { $(this).append(_lable); $scope.moveArray(i); i--; return false; } }); } $scope.init_barrage(); }; //将数组第一位放到最后一位,（因弹幕池内容太少，所以没删除已显示的弹幕） $scope.moveArray = function (i) { var temp = $scope.danmus[i]; $scope.danmus.splice(i,1); $scope.danmus.push(temp); } //判断content区域有没有弹幕 $scope.checkDanmu = function (el) { return el.find('p').length == 0 ? true : false; }; //获取随机颜色 $scope.getRandomColor = function () { return '#' + (function(h){ return new Array(7 - h.length).join("0") + h })((Math.random() * 0x1000000 << 0).toString(16)) }; //初始化弹幕参数 $scope.init_barrage = function () { $(".mask div p").show().each(function() { var _moveLeft = window.screen.width+$(this).width(); var time = 100000 / $(this).width() + 5000;//弹幕滑动时间 $scope.addCssAnimate($(this),_moveLeft,time); }); }; //添加弹幕动画 $scope.addCssAnimate = function (el,_moveLeft,time) { el.css({ 'transform':'translateX('+-_moveLeft+'px)', 'transition':'all '+time+'ms'+ ' linear', '-webkit-transform':'translateX('+-_moveLeft+'px)', '-webkit-transition':'all '+time+'ms'+ ' linear', '-moz-transform':'translateX('+-_moveLeft+'px)', '-moz-transition':'all '+time+'ms'+ ' linear', '-ms-transform':'translateX('+-_moveLeft+'px)', '-ms-transition':'all '+time+'ms'+ ' linear' }); //当动画执行完毕后，将弹幕移到原处，更换弹幕文字，重新开始执行动画，相当于对原本弹幕的复用 $timeout(function () { //判断弹幕池是否还有内容，如果没有则移除弹幕 if ($scope.danmus.length > 0) { el.css({ 'transform':'translateX(0px)', 'transition':'all 0ms linear', '-webkit-transform':'translateX(0px)', '-webkit-transition':'all 0ms linear', '-moz-transform':'translateX(0px)', '-moz-transition':'all 0ms linear', '-ms-transform':'translateX(0px)', '-ms-transition':'all 0ms linear' }); $scope.resetAnimate(el); } else { el.remove(); } },time); }; //更换弹幕内容，重新开始弹幕动画 $scope.resetAnimate = function (el) { el.html($scope.danmus[0]); $scope.moveArray(0); var _moveLeft = el.width() + screen.width; var time = 100000 / el.width() + 5000; $scope.addCssAnimate(el,_moveLeft,time); }; //评论，添加弹幕 $scope.addDanmu = function () { var text = $scope.data.comment; if(text == ""){ return; } $scope.danmus.unshift(text); }; $scope.createDanmuContent();