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视频弹幕Demo

news 来源：原创 2024/5/18 16:34:48

源码整理自互联网，原作者不详。

Demo地址

<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <meta charset="utf-8">
    <title>斗鱼弹幕</title>
    <style>
        html,body{font-size:10px;overflow:hidden;margin:0;padding:0;}
        #box{width:100%;height:100%;}
        #dm{width:100%;height:90vh;background:#E8F1F5;}
        #dm span{width:auto;height:3rem;font-size:2rem;line-height:2rem;position:absolute;white-space:nowrap;}
        #idDom{width:100%;height:10vh;background:#666;position:absolute;bottom:0;display:flex;align-items:center;justify-content:center;}
        #content{width:50rem;height:10vh;display:flex;align-items:center;justify-content:center;}
        .title{font-size:2.2px rein;color:#fff;line-height:#ccc;}
        .text{width:30rem;height:2.5rem;border:none;border-radius:.5rem;font-size:1.4rem;margin:0 .5rem;padding:0 1rem;}
        .btn{width:6rem;height:3rem;border:none;background:red;color:#fff;}
    </style>
</head>

<body>

<div class="box" id="box">
    <div id="dm"></div>
    <div class="idDom" id="idDom">
        <div id="content">
            <p class="title">吐槽:</p>
            <input type="text" class="text" id="text" placeholder="请输入你想说的话" />
            <button type="button" class="btn" id="btn">发射!</button>
        </div>
    </div>
</div>
<script langugae="javascript">
var timer;
var btn = document.getElementById('btn');

btn.onclick = function() { addBarrage();}
document.onkeydown = function(evt) {var event = evt || window.event;if (event.keyCode == 13) {addBarrage();}}
var colors = ['#2C3E50', '#FF0000', '#1E87F0', '#7AC84B', '#FF7F00', '#9B39F4', '#FF69B4'];//弹幕颜色库

function addBarrage() {
    clearInterval(timer);
    var text = document.getElementById('text').value;
    document.getElementById('text').value = "";
       var index = parseInt(Math.random() * colors.length); //随机弹幕颜色
    var screenW = window.innerWidth;
    var screenH = dm.offsetHeight;
    var max = Math.floor(screenH / 40);
    var height = 10 + 40 * (parseInt(Math.random() * (max + 1)) - 1);
    var span = document.createElement('span');
    span.style.left = screenW + 'px';
    span.style.top = height + 'px';
    span.style.color = colors[index];
    span.innerHTML = text;
    var dmDom = document.getElementById('dm');
    dmDom.appendChild(span);
    timer = setInterval(move, 10);
}
function move() {
    var arr=[];
    var oSpan=document.getElementsByTagName('span');
    for(var i=0;i<oSpan.length;i++){
        arr.push(oSpan[i].offsetLeft);
        arr[i] -= 2;
        oSpan[i].style.left = arr[i]+'px';
        if(arr[i]<-oSpan[i].offsetWidth){
            var dmDom=document.getElementById('dm');
            dmDom.removeChild(dmDom.childNodes[0]);
        }
    }
}
</script>
</body>
</html>