Opera GX Mod开发报错：根元素后存在意外数据

问题根源 #

报错提示“Manifest is not valid JSON. Line: 37, column: 6, Unexpected data after root element.”，是因为两处JSON语法错误：

• 根对象闭合后存在多余逗号：最后一行的},无效，JSON根元素结束后不能有额外逗号
• 键值对嵌套错误：schema_version属于顶级配置项，被错误嵌套在mod对象的闭合括号内

修正后的完整代码 #

{   
    "name": "Shikanoko Nokonoko Koshitantan",
    "description": "shikanoko nokonoko koshitantan shikanoko nokonoko koshitantan shikanoko nokonoko koshitantan shikanoko nokonoko koshitantan shikanoko nokonoko koshitantan",
    "developer": {
        "name": "Chaosuu"
    },
    "icons": {
        "512": "file.png"
    },
    "manifest_version": 3,
    "mod": {
        "license": "license.txt",
        "payload": {
            "background_music": [ "music/shikanokonokonokokoshitantan.mp3" ]
        },
        "wallpaper": {
            "dark": {   
                "image": "wallpaper/dark.png",
                "text_color": "#FFFFFF",
                "text_shadow": "#757575"
            },
            "light": {
                "image": "wallpaper/video.webm",
                "first_frame": "wallpaper/first_frame.jpeg",
                "text_color": "#FFFFFF",
                "text_shadow": "#0B000E"
            }
        }
    },
    "schema_version": 1,
    "version": "1.0"
}

验证建议 #

可以用浏览器控制台的JSON.parse()方法验证语法正确性，确保所有括号、逗号配对无误。

内容的提问来源于stack exchange，提问作者Chaosuu