(二)Manifest文件结构-优快云博客

本文链接：https://blog.youkuaiyun.com/github_35957188/article/details/54809924

本文介绍了JSON数据结构的两种形式：键值对与纯值，并通过《哈利·波特》的例子进行说明。此外，详细列举了Chrome扩展Manifest文件的必备内容及可选配置项，帮助开发者快速掌握Manifest文件的编写。

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json 有两种结构
一种是键值对，即key：value
json1

一种是纯值的
json2

举个栗子：

{
    "name" : "Harry Potter",
    "author" : {
        "name" : "J.K.Rowling",
        "birth" : 1964
    },
    "books" : [
        "Philosopher's Stone",
        "Chamber of Secrets",
        "Prisoner of Azkaban",
        "Goblet of Fire",
        "Order of the Phoenix",
        "Half-Blood Prince",
        "Deathly Hallows"
    ]
}

manifest 必备内容
- Chrome扩展的Manifest 必须包含name、version 和 manifest_version属性，目前来说manifest_version属性值只能为数字2，对于应用来说，还必须包含app属性。
可套用模板

{
    "app": {
        "background": {
            "scripts": ["background.js"]
        }
    },
    "manifest_version": 2,
    "name": "My Extension",
    "version": "versionString",
    "default_locale": "en",
    "description": "A plain text description",
    "icons": {
        "16": "images/icon16.png",
        "48": "images/icon48.png",
        "128": "images/icon128.png"
    },
    "browser_action": {
        "default_icon": {
            "19": "images/icon19.png",
            "38": "images/icon38.png"
        },
        "default_title": "Extension Title",
        "default_popup": "popup.html"
    },
    "page_action": {
        "default_icon": {
            "19": "images/icon19.png",
            "38": "images/icon38.png"
        },
        "default_title": "Extension Title",
        "default_popup": "popup.html"
    },
    "background": {
        "scripts": ["background.js"]
    },
    "content_scripts": [
        {
            "matches": ["http://www.google.com/*"],
            "css": ["mystyles.css"],
            "js": ["jquery.js", "myscript.js"]
        }
    ],
    "options_page": "options.html",
    "permissions": [
        "*://www.google.com/*"
    ],
    "web_accessible_resources": [
        "images/*.png"
    ]
}