Html5实现二维码扫描并解析

主要代码解析

复制代码
(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);

样例展示
1.呼起前的页面

2.呼起后的页面