"plus": {  //uni-app项目对应节点名称为"app-plus"  
        "useragent": {  
            "value": "要设置的默认userAgent值",  
            "concatenate": "true|false"  
        },  
        "useragent_android": {  
            "value": "android平台要设置的默认userAgent值",  
            "concatenate": "true|false"  
        },  
        "useragent_ios": {  
            "value": "ios平台要设置的默认userAgent值",  
            "concatenate": "true|false"  
        },  
        // ...  
    }