quagga+llqrcode实现摄像头二维码扫描识别效果代码-html代码-BFW代码库

代码语言：html
所属分类：其他
代码描述：quagga+llqrcode实现摄像头二维码扫描识别效果代码
下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
        <meta content="width=device-width,initial-scale=1.0,maximum-scale=1.0,user-scalable=0" name="viewport"/>
<style>
    @charset "UTF-8";
.wrapper{
    width: 1200px;
    margin: 0 auto;
}
.collapsable-source pre {
    font-size: small;
}

.input-field {
    display: flex;
    align-items: center;
    width: 260px;
}

.input-field label {
    flex: 0 0 auto;
    padding-right: 0.5rem;
}

.input-field input {
    flex: 1 1 auto;
    height: 20px;
}

.input-field button {
    flex: 0 0 auto;
    height: 28px;
    font-size: 20px;
    width: 40px;
}

.icon-barcode {
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center center;
    background-image: url(data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0idXRmLTgiPz48IURPQ1RZUEUgc3ZnIFBVQkxJQyAiLS8vVzNDLy9EVEQgU1ZHIDEuMS8vRU4iICJodHRwOi8vd3d3LnczLm9yZy9HcmFwaGljcy9TVkcvMS4xL0RURC9zdmcxMS5kdGQiPjxzdmcgdmVyc2lvbj0iMS4xIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHhtbG5zOnhsaW5rPSJodHRwOi8vd3d3LnczLm9yZy8xOTk5L3hsaW5rIiB3aWR0aD0iMzIiIGhlaWdodD0iMzIiIHZpZXdCb3g9IjAgMCAzMiAzMiI+PHBhdGggZD0iTTAgNGg0djIwaC00ek02IDRoMnYyMGgtMnpNMTAgNGgydjIwaC0yek0xNiA0aDJ2MjBoLTJ6TTI0IDRoMnYyMGgtMnpNMzAgNGgydjIwaC0yek0yMCA0aDF2MjBoLTF6TTE0IDRoMXYyMGgtMXpNMjcgNGgxdjIwaC0xek0wIDI2aDJ2MmgtMnpNNiAyNmgydjJoLTJ6TTEwIDI2aDJ2MmgtMnpNMjAgMjZoMnYyaC0yek0zMCAyNmgydjJoLTJ6TTI0IDI2aDR2MmgtNHpNMTQgMjZoNHYyaC00eiI+PC9wYXRoPjwvc3ZnPg==);
}

.overlay {
    overflow: hidden;
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    background-color: rgba(0, 0, 0, 0.3);
}

.overlay__content {
    top: 50%;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 90%;
    max-height: 90%;
    max-width: 800px;
}

.overlay__close {
    position: absolute;
    right: 0;
    padding: 0.5rem;
    width: 2rem;
    height: 2rem;
    line-height: 2rem;
    text-align: center;
    background-color: white;
    cursor: pointer;
    border: 3px solid black;
    font-size: 1.5rem;
    margin: -1rem;
    border-radius: 2rem;
    z-index: 100;
    box-sizing: content-box;
}

.overlay__content video {
    width: 100%;
    height: 100%;
}

.overlay__content canvas {
    position: absolute;
    width: 100%;
    height: 100%;
    left: 0;
    top: 0;
}

#interactive.viewport {
    position: relative;
}

#interactive.viewport > canvas, #interactive.viewport > video {
    max-width: 100%;
    width: 100%;
}

canvas.drawing, canvas.drawingBuffer {
    position: absolute;
    left: 0;
    top: 0;
}

/* line 16, ../sass/_viewport.scss */
.controls fieldset {
    border: none;
    margin: 0;
    padding: 0;
}
/* line 19, ../sass/_viewport.scss */
.controls .input-group {
    float: left;
}
/* line 21, ../sass/_viewport.scss */
.controls .input-group input, .controls .input-group button {
    display: block;
}
/* line 25, ../sass/_viewport.scss */
.controls .reader-config-group {
    float: right;
}
/* line 28, ../sass/_viewport.scss */
.controls .reader-config-group label {
    display: block;
}
/* line 30, ../sass/_viewport.scss */
.controls .reader-config-group label span {
    width: 9rem;
    display: inline-block;
    text-align: right;
}
/* line 37, ../sass/_viewport.scss */
.controls:after {
    content: '';
    display: block;
    clear: both;
}

/* line 22, ../sass/_viewport.scss */
#result_strip {
    margin: 10px 0;
    border-top: 1px solid #EEE;
    border-bottom: 1px solid #EEE;
    padding: 10px 0;
}
/* line 28, ../sass/_viewport.scss */
#result_strip ul.thumbnails {
    padding: 0;
    margin: 0;
    list-style-type: none;
    width: auto;
    overflow-x: auto;
    overflow-y: hidden;
    white-space: nowrap;
}
/* line 37, ../sass/_viewport.scss */
#result_strip ul.thumbnails > li {
    display: inline-block;
    vertical-align: middle;
    width: 160px;
}
/* line 41, ../sass/_viewport.scss */
#result_strip ul.thumbnails > li .thumbnail {
    padding: 5px;
    margin: 4px;
    border: 1px dashed #CCC;
}
/* line 46, ../sass/_viewport.scss */
#result_strip ul.thumbnails > li .thumbnail img {
    max-width: 140px;
}
/* line 49, ../sass/_viewport.scss */
#result_strip ul.thumbnails > li .thumbnail .caption {
    white-space: normal;
}
/* line 51, ../sass/_viewport.scss */
#result_strip ul.thumbnails > li .thumbnail .caption h4 {
    text-align: center;
    word-wrap: break-word;
    height: 40px;
    margin: 0px;
}
/* line 61, ../sass/_viewport.scss */
#result_strip ul.thumbnails:after {
    content: "";
    display: table;
    clear: both;
}


/* Scan! Button */

.icon-barcode.scan {
    font-size: large;
    padding: 0.5em 0.5em 0.5em 4em;
    text-align: center;
    display: block;
    background-position: 0.5em center;
    cursor: pointer;
}

.icon-barcode.scan:before {
    margin-right: 0.5em;
}

/* Reader Checkboxes */

.controls {
    display: flex;
    flex-direction: row;
    align-items: flex-start;
}

.controls .readers {
    font-size: 1.3em;
    margin-left: 1em;
}

.controls .readers label {
    display: flex;
    flex-direction: row;
    align-items: center;
}

.controls .readers input {
    flex: 0 0 auto;
    height: 1.5rem;
    width: 1.5rem;
}

.controls .readers span {
    flex: 1 1 auto;
}

/* Results */

.overlay .results {
    position: absolute;
    top: 100%;
    background-color: white;
    left: 0;
    right: 0;
}

.results {
    margin: 0 auto;
    flex: 0 0 auto;
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    background-color: #DDD;
    margin: 0;
    padding: 0;
    list-style-type: none;
    padding: 0.25rem;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border-top: 1px solid #777;
}

.results > li {
    flex: 0 1 auto;
    margin: 0.25rem;
    background: #fff;
    border-radius: 2px;
    box-shadow: 0 3px 6px rgba(0,0,0,0.16), 0 3px 6px rgba(0,0,0,0.23);
}

.results:empty {
    display: none;
}

.result {
    display: flex;
    flex-direction: column;
    padding: 0.5rem;
}

.result > .format {
    font-weight: bold;
}

.result > .code {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
#qr-canvas{
    display: none;
}
#info{
    width: 1200px;
    margin: 30px auto;
    text-align: center;
    background: #ddd;
}

/* Scanner */

.container .controls.hide {
    display: none;
}

.overlay--inline {
    display: none;
}

.overlay--inline.show {
    display: block;
}

@media (max-width: 603px) {
    .controls {
        flex-direction: column;
        align-items: stretch;
    }

    .controls .readers {
        margin-left: 0;
        margin-top: 1em;
    }
}


@media (max-width: 603px) {
    /* line 2, ../sass/phone/_core.scss */
    #container {
        margin: 10px auto;
        -moz-box-shadow: none;
        -webkit-box-shadow: none;
        box-shadow: none;
    }
}
@media (max-width: 603px) {
    /* line 5, ../sass/phone/_viewport.scss */
    .reader-config-group {
        width: 100%;
    }

    .reader-config-group label > span {
        width: 50%;
    }

    .reader-config-group label > select, .reader-config-group label > input {
        max-width: calc(50% - 2px);
    }

    #interactive.viewport {
        width: 100%;
        height: auto;
        overflow: hidden;
    }

    /* line 20, ../sass/phone/_viewport.scss */
    #result_strip {
        margin-top: 5px;
        padding-top: 5px;
    }

    #result_strip ul.thumbnails {
        width: 100%;
        height: auto;
    }

    /* line 24, ../sass/phone/_viewport.scss */
    #result_strip ul.thumbnails > li {
        width: 150px;
    }
    /* line 27, ../sass/phone/_viewport.scss */
    #result_strip ul.thumbnails > li .thumbnail .imgWrapper {
        width: 130px;
        height: 130px;
        overflow: hidden;
    }
    /* line 31, ../sass/phone/_viewport.scss */
    #result_strip ul.thumbnails > li .thumbnail .imgWrapper img {
        margin-top: -25px;
        width: 130px;
        height: 180px;
    }
}

</style>
</head>
<body>
<div class="wrapper">
    <section>
        <section id="container" class="container">
            <h3>请注意，需要安装摄像头，预览时并允许访问，否则会出错</h3>
            <div class="controls">
                <button type="button" class="icon-barcode button scan">开始扫描</button>

            </div>
            <div class="overlay overlay--inline">
                <div class="overlay__content">
                    <div class="overlay__close">X</div>
                    <ul class="results"></ul>
                    <video id="v" ></video>
                    <canvas id='qr-canvas'></canvas>
                </div>
            </div>
        </section>
        <ul class="results"></ul>
    </section>
</div>

<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/quagga.js"></script>
<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/llqrcode.js"></script>
<script>

var Quagga = window.Quagga;
var App = {
    _lastResult: null,
    init: function() {
        this.attachListeners();
    },
    activateScanner: function() {
        var scanner = this.configureScanner('.overlay__content'),
            onDetected = function (result) {
                this.addToResults(result);
            }.bind(this),
            stop = function() {
                scanner.stop();  // should also clear all event-listeners?
                scanner.removeEventListener('detected', onDetected);
                this.hideOverlay();
                this.attachListeners();
            }.bind(this);

        this.showO.........完整代码请登录后点击上方下载按钮下载查看