jquery-qrcode生成二维码

1. 引用方式：

<script src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
<script src="http://apps.bdimg.com/libs/jquery-qrcode/1.0.0/jquery.qrcode.min.js"></script>

2. 使用方式：

<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1,user-scalable=no">
        <meta name="format-detection" content="telephone=no">
        <script src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
        <script src="http://apps.bdimg.com/libs/jquery-qrcode/1.0.0/jquery.qrcode.min.js"></script>
        <title></title>
    </head>

    <body>
        <div id="qrcode"></div>
        <script type="text/javascript">
            $('#qrcode').qrcode({
                render: "canvas",     //默认配置，可以为空也可以替换为table
                width: "250",        //设置宽度
                height: "250",      //设置高度
                foreground: "#C00",    //二维码颜色
                 background: "#FFF",    //背景色
                text: 'https://www.cnblogs.com/xyyt', //二维码内容            
            });
        </script>
    </body>
</html>

3. 微信中识别二维码——转换为图片格式：

<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1,user-scalable=no">
        <meta name="format-detection" content="telephone=no">
        <script src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
        <script src="http://apps.bdimg.com/libs/jquery-qrcode/1.0.0/jquery.qrcode.min.js"></script>
        <title></title>
    </head>
    <body>
        <div id="qrcode"></div>
        <img id="qrcodeImg"/>
        <script type="text/javascript">
            var qrcode = $('#qrcode').qrcode({
                render: "canvas",     //默认配置，可以为空也可以替换为table
                width: "250",        //设置宽度
                height: "250",      //设置高度
                foreground: "#C00",    //二维码颜色
                 background: "#FFF",    //背景色
                text: 'https://www.cnblogs.com/xyyt', //二维码内容            
            }).hide();
            //将生成的二维码转换成图片格式
            var canvas = qrcode.find('canvas').get(0);
            $('#qrcodeImg').attr('src', canvas.toDataURL('image/jpg'));
        </script>
    </body>
</html>

4. 生成中文：

        <div id="chinese_qrcode"></div>
        <script>
            $(function() {
                function utf16to8(str) {
                    var out, i, len, c;
                    out = "";
                    len = str.length;
                    for(i = 0; i < len; i++) {
                        c = str.charCodeAt(i);
                        if((c >= 0x0001) && (c <= 0x007F)) {
                            out += str.charAt(i);
                        } else if(c > 0x07FF) {
                            out += String.fromCharCode(0xE0 | ((c >> 12) & 0x0F));
                            out += String.fromCharCode(0x80 | ((c >> 6) & 0x3F));
                            out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F));
                        } else {
                            out += String.fromCharCode(0xC0 | ((c >> 6) & 0x1F));
                            out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F));
                        }
                    }
                    return out;
                }
                jQuery("#chinese_qrcode").qrcode(utf16to8("中文中文")); //使用encodeURI进行转码
            })
        </script>

 

posted on 2018-08-02 18:31  逍遥云天  阅读(285)  评论(0)  编辑  收藏  举报

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