js文件2

来源：互联网发布：web 后端优化编辑：程序博客网时间：2024/05/29 10:08

调用：
链接：

http://www.helloweba.com/view-blog-226.html

<script type="text/javascript">window.onload=function(){    $('#code').qrcode("http://cms.dorago.cn/login.jsp"); //需要跳转的路径//或者下边的方法//    $("#code").qrcode({ //      render: "table", //table方式 //      width: 200, //宽度 //      height:200, //高度 //      text: "nihao" //任意内容 //  });  }</script><div style="padding-top: 50px;">用户注册二维码:</div>                   <div id="code" style="margin-top: 25px;"></div> <!-- 此处是生成二维码的地方-->

识别中文：

function toUtf8(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;    } //调用:var str = toUtf8("钓鱼岛是中国的！"); $('#code').qrcode(str);

jquery.qrcode.min.js

(function( $ ){    $.fn.qrcode = function(options) {        // if options is string,         if( typeof options === 'string' ){            options = { text: options };        }        // set default values        // typeNumber < 1 for automatic calculation        options = $.extend( {}, {            render      : "canvas",            width       : 256,            height      : 256,            typeNumber  : -1,            correctLevel    : QRErrorCorrectLevel.H,                        background      : "#ffffff",                        foreground      : "#000000"        }, options);        var createCanvas    = function(){            // create the qrcode itself            var qrcode  = new QRCode(options.typeNumber, options.correctLevel);            qrcode.addData(options.text);            qrcode.make();            // create canvas element            var canvas  = document.createElement('canvas');            canvas.width    = options.width;            canvas.height   = options.height;            var ctx     = canvas.getContext('2d');            // compute tileW/tileH based on options.width/options.height            var tileW   = options.width  / qrcode.getModuleCount();            var tileH   = options.height / qrcode.getModuleCount();            // draw in the canvas            for( var row = 0; row < qrcode.getModuleCount(); row++ ){                for( var col = 0; col < qrcode.getModuleCount(); col++ ){                    ctx.fillStyle = qrcode.isDark(row, col) ? options.foreground : options.background;                    var w = (Math.ceil((col+1)*tileW) - Math.floor(col*tileW));                    var h = (Math.ceil((row+1)*tileW) - Math.floor(row*tileW));                    ctx.fillRect(Math.round(col*tileW),Math.round(row*tileH), w, h);                  }               }            // return just built canvas            return canvas;        }        // from Jon-Carlos Rivera (https://github.com/imbcmdth)        var createTable = function(){            // create the qrcode itself            var qrcode  = new QRCode(options.typeNumber, options.correctLevel);            qrcode.addData(options.text);            qrcode.make();            // create table element            var $table= $('<table></table>')                .css("width", options.width+"px")                .css("height", options.height+"px")                .css("border", "0px")                .css("border-collapse", "collapse")                .css('background-color', options.background);            // compute tileS percentage            var tileW   = options.width / qrcode.getModuleCount();            var tileH   = options.height / qrcode.getModuleCount();            // draw in the table            for(var row = 0; row < qrcode.getModuleCount(); row++ ){                var $row = $('<tr></tr>').css('height', tileH+"px").appendTo($table);                for(var col = 0; col < qrcode.getModuleCount(); col++ ){                    $('<td></td>')                        .css('width', tileW+"px")                        .css('background-color', qrcode.isDark(row, col) ? options.foreground : options.background)                        .appendTo($row);                }               }            // return just built canvas            return $table;        }        return this.each(function(){            var element = options.render == "canvas" ? createCanvas() : createTable();            $(element).appendTo(this);        });    };})( jQuery );

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