uniapp扫码功能

// 允许从相机和相册扫码  
uni.scanCode({  
    success: function (res) {  
        console.log('条码类型：' + res.scanType);  
        console.log('条码内容：' + res.result);  
    }  
});  

// 只允许通过相机扫码  
uni.scanCode({  
    onlyFromCamera: true,  
    success: function (res) {  
        console.log('条码类型：' + res.scanType);  
        console.log('条码内容：' + res.result);  
    }  
});  

// 调起条码扫描  
uni.scanCode({  
    scanType: ['barCode'],  
    success: function (res) {  
        console.log('条码类型：' + res.scanType);  
        console.log('条码内容：' + res.result);  
    }  
});