【js编程艺术】小制作六

时间：2021-02-16 12:53:56

1.html

/* movie.html*/
<!DOCTYPE html>

<html>

<head>

    <meta charset="utf-8">

    <title>My Video</title>

    <link rel="stylesheet" type="text/css" href="styles/player.css">

</head>

<body>

    <div class="video-wrapper">

        <video id="movie" controls>

            <source src="movie.mp4" />

            <source src="movie.webm" type="video/webm; codecs='vp8, vorbis'" />

            <source src="movie.ogv" type="video/ogg; codecs='theora, vorbis'" />

            <p>

                Dowmload movie as

                <a href="movie.mp4">MP4</a>,

                <a href="movie.webm">WebM</a>,

                or <a href="movie.ogv">Ogg</a>.

            </p>

        </video>

    </div>

    <script type="text/javascript" src="scripts/player.js"></script>

</body>

</html>

2.css

/* palyer.css*/
.video-wrapper{

    overflow: hidden;

}

.video-wrapper .controls{

    position: absolute;

    height: 30px;

    width: 30px;

    margin: auto;

    background: rgba(0, 0, 0, 0.5);

}

.video-wrapper button{

    display: block;

    width: 100%;

    height:  100%;

    border:;

    cursor: pointer;

    font-size: 17px;

    color: #fff;

    background: transparent;

}

.video-wrapper button[paused]{

    font-size: 12px;

}

3.js

/* player.js*/
function createVideoControls(){

    var vids = document.getElementsByTagName("video");

    for(var i = 0; i < vids.length; i++){

        addControls(vids[i]);

    }

}

function addControls(vid){

    vid.removeAttribute("controls");

    vid.height = vid.videoHeight;

    vid.width = vid.videoWidth;

    vid.parentNode.style.height = vid.videoHeight + "px";

    vid.parentNode.style.width = vid.videoWidth + "px";

    var controls = document.createElement("div");

    controls.setAttribute("class", "controls");

    var play = document.createElement("button");

    play.setAttribute("title", "Play");

    play.innerHTML = "&#x25BA";

    controls.appendChild(play);

    vid.parentNode.insertBefore(controls, vid);

    play.onclick = function(){

        if(vid.ended){

            vid.currrentTime = 0;

        }

        if(vid.paused){

            vid.play();

        }else{

            vid.pause();

        }

    };

    vid.addEventListener("play", function(){

        play.innerHTML = "▐▐";

        play.setAttribute("paused", true);

    }, false);

    vid.addEventListener("pause", function(){

        play.removeAttribute("pause");

        play.innerHTML = "►";

    }, false);

    vid.addEventListener("ended", function(){

        vid.pause();

    }, false);

}

window.onload = function(){

    createVideoControls();

}

最后出来是这样子的：

【js编程艺术】小制作六

和书上的有点不一样，先不管了。这是视频：

看不了肿么办…………………………………………我传到腾讯视频了：传送门。

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