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使用jquery.qrcode生成二维码

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Release: 2016-06-07 11:43:08
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使用jquery.qrcode生成二维码
原文地址http://www.bieanju.com/75.html
试验的时候发现不能识别中文内容的二维码,通过查找多方资料了解到,jquery-qrcode是采用charCodeAt()方式进行编码转换的。而这个方法默认会获取它的Unicode编码,如果有中文内容,在生成二维码前就要把字符串转换成UTF-8,然后再生成二维码。您可以通过以下函数来转换中文字符串:
function toUtf8(str) {    <br>     var out, i, len, c;    <br>     out = "";    <br>     len = str.length;    <br>     for(i = 0; i          c = str.charCodeAt(i);    <br>         if ((c >= 0x0001) && (c              out += str.charAt(i);    <br>         } else if (c > 0x07FF) {    <br>             out += String.fromCharCode(0xE0 | ((c >> 12) & 0x0F));    <br>             out += String.fromCharCode(0x80 | ((c >>  6) & 0x3F));    <br>             out += String.fromCharCode(0x80 | ((c >>  0) & 0x3F));    <br>         } else {    <br>             out += String.fromCharCode(0xC0 | ((c >>  6) & 0x1F));    <br>             out += String.fromCharCode(0x80 | ((c >>  0) & 0x3F));    <br>         }    <br>     }    <br>     return out;    <br> } 以下示例:
var str = toUtf8("程序猿!"); <br> $('#code').qrcode(str); 

附件 qrcode.zip ( 5.88 KB 下载:248 次 )

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