Html5实现二维码扫描并解析

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

<div 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" />
</div>

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);