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JQ实现弹幕效果,快来吐糟你的想法吧
代码如下,复制即可使用:
<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title>JQ实现弹幕效果</title> <style type="text/css"> *{ padding: 0; margin: 0; } #box{ height:700px; width:1000px; margin: 0 auto; border:1px solid #000000; position: relative; } #main{ width:100%; height:605px; position: relative; overflow: hidden; } p{ position: absolute; left:1000px; width:200px; top:0; } #bottom{ width:100%; height:80px; background: #ABCDEF; text-align: center; padding-top: 15px; position: absolute; left: 0; bottom: 0; } #txt{ width:300px; height:50px; } #btn{ width:100px; height:50px; } </style> </head> <body> <div id="box"> <div id="main"> </div> <div id="bottom"> <input type="text" id="txt" placeholder="请输入内容" /> <input type="button" id="btn" value="发射" /> </div> </div> <script src="http://libs.baidu.com/jquery/1.9.1/jquery.js"></script> <script type="text/javascript"> $(function(){ var pageH=parseInt($("#main").height()); var colorArr=["#cfaf12","#12af01","#981234","#adefsa","#db6be4","#f5264c","#d34a74"]; $("#btn").bind("click",auto); document.onkeydown=function(e){ if(e.keyCode == 13){ auto(); } }; function auto(){ var $value = $("#txt").val(); $("#main").append("<p>" + $value + "</p>"); $("#txt").val(""); var _top=parseInt(pageH*(Math.random())); var num=parseInt(colorArr.length*(Math.random())); $("p:last-child").css({"top":_top,"color":colorArr[num],"font-size":"20px"}); $("p:last-child").animate({"left":"-200px"},10000); $("p:last-child").stop().animate({"left":"-300px"},10000,"linear",function(){ $(this).remove(); }); //console.log($value); }; }) </script> </body> </html>
实例扩展:
<!doctype html> <html> <head> <meta charset="utf-8"> <title></title> <style type="text/css"> html, body { margin: 0px; padding: 0px; width: 100%; height: 100%; font-family: "微软雅黑"; font-size: 62.5%; } .boxDom { width: 100%; height: 100%; position: relative; overflow: hidden; } .idDom { width: 100%; height: 10%; background: #666; position: fixed; bottom: 0px; } .content { display: inline-block; width: 460px; height: 40px; position: absolute; left: 0px; right: 0px; top: 0px; bottom: 0px; margin: auto; } .title { display: inline; font-size: 4em; vertical-align: bottom; color: #fff; } .text { border: none; width: 300px; height: 30px; border-radius: 5px; font-size: 2.4em; } .btn { width: 60px; height: 30px; background: #f90000; border: none; color: #fff; font-size: 2.4em; } span { height: 40px; position: absolute; overflow: hidden; color: #000; font-size: 4em; line-height: 1.5em; cursor: pointer; white-space: nowrap; } #boxDom video{ width: 80%; height: 90%; float: left; } #boxDom .list-info{ width: 20%; height: 90%; float: left; background-color: #666; overflow-y: auto; overflow-x: hidden; position: relative; z-index: 999; } .list-info p{ font-size: 15px; line-height: 20px; border-bottom: 1px dashed #ccc; text-indent: 2em; color: #fff; } </style> </head> <body> <div class="boxDom" id="boxDom"> <video controls="controls" src="movie/10_2fdd2bbcd15c68497744f07d4527cef2_3.mp4"></video> <div class="list-info"> </div> <div class="idDom" id="idDom"> <div class="content"> <p class="title">吐槽:</p> <input type="text" class="text" id="text"/> <button type="button" class="btn" id="btn">发射</button> </div> </div> </div> <script src="js/jquery-1.12.4.js"></script> <script> //生成随机颜色 var randomColor=function(){ var r= Math.floor(Math.random()*257); var g= Math.floor(Math.random()*257); var b= Math.floor(Math.random()*257); return "rgb("+r+","+g+","+b+")"; } //定义数组保存弹幕 var saveDan=[],index=0,tm; //弹幕自动移动方法 var autoAnimate=function(){ index++; index>saveDan.length-1 && (index=0); saveDan[index].appendTo($("#boxDom")).animate({ "right":$(document).width(), },10000,function () { $(this).css("right",$(".list-info").width()-$(this).width()).remove(); }); } //点击创建弹幕 $("#btn").click(function () { var txt=$("#text"); var randomTop=Math.floor(Math.random()*($("#boxDom video").height()-40)); if(txt.val().trim().length==0)return; var span= $("<span></span>").text(txt.val()).css({ "color":randomColor(), "top":randomTop, "right":$(".list-info").width(), "z-index":888 }); saveDan.unshift(span);//将新的弹幕添加到数组内容的前面 //添加弹幕列表 $("<p></p>").text(txt.val()).css("color",randomColor()).prependTo($(".list-info")); txt.val("");//清空文本框 //自动跑起来 clearInterval(tm); index=saveDan.length-1 tm=setInterval(autoAnimate,1000); }); //enter键确认发送 $(document).keydown(function (e) { var e=e||window.event; e.keyCode==13 && ($("#btn").click()); }); </script> </body> </html>
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