Html5는 QR 코드 스캐닝 및 구문 분석을 구현합니다.

<script src="lib/zepto.js"></script> 
<script src="lib/qrcode.lib.min.js"></script> 
<script src="lib/qrcode.js"></script>

<p class="qr-btn" node-type="jsbridge">扫描二维码1 
<input node-type="jsbridge" type="file" name="myPhoto" value="扫描二维码1" /> 
</p>

input[node-type=jsbridge]{ 
visibility: hidden; 
}

//初始化扫描二维码按钮，传入自定义的 node-type 属性 
$(function() { 
Qrcode.init($('[node-type=jsbridge]')); 
});

(function($) { 
var Qrcode = function(tempBtn) { 
//该对象只支持微博域下的解析，也就是说不是微博域下的页面只能用第二种方案解析二维码 
if (window.WeiboJSBridge) { 
$(tempBtn).on('click', this.weiBoBridge); 
} else { 
$(tempBtn).on('change', this.getImgFile); 
} 
}; 
Qrcode.prototype = { 
weiBoBridge: function() { 
WeiboJSBridge.invoke('scanQRCode', null, function(params) { 
//得到扫码的结果 
location.href=params.result; 
}); 
}, 
getImgFile: function() { 
var _this_ = this; 
var imgFile = $(this)[0].files; 
var oFile = imgFile[0]; 
var oFReader = new FileReader(); 
var rFilter = /^(?:image\/bmp|image\/cis\-cod|image\/gif|image\/ief|image\/jpeg|image\/jpeg|image\/jpeg|image\/pipeg|image\/png|image\/svg\+xml|image\/tiff|image\/x\-cmu\-raster|image\/x\-cmx|image\/x\-icon|image\/x\-portable\-anymap|image\/x\-portable\-bitmap|image\/x\-portable\-graymap|image\/x\-portable\-pixmap|image\/x\-rgb|image\/x\-xbitmap|image\/x\-xpixmap|image\/x\-xwindowdump)$/i; 
if (imgFile.length === 0) { 
return; 
} 
if (!rFilter.test(oFile.type)) { 
alert("选择正确的图片格式!"); 
return; 
} 
//读取图片成功后执行的代码 
oFReader.onload = function(oFREvent) { 
qrcode.decode(oFREvent.target.result); 
qrcode.callback = function(data) { 
//得到扫码的结果 
location.href = data; 
}; 
}; 
oFReader.readAsDataURL(oFile); 
}, 
destory: function() { 
$(tempBtn).off('click'); 
} 
}; 
//初始化 
Qrcode.init = function(tempBtn) { 
var _this_ = this; 
var inputDom; 
tempBtn.each(function() { 
new _this_($(this)); 
}); 
$('[node-type=qr-btn]').on('click', function() { 
$(this).find('[node-type=jsbridge]')[0].click(); 
}); 
}; 
window.Qrcode = Qrcode; 
})(window.Zepto ? Zepto : jQuery);