manifest.json

  {
    "name": "Crawl picture with Aliexpress",
    "version": "1.0",
    "description": "用于抓取1688和速易通产品图片!",
    "permissions": ["downloads", "contextMenus", "tabs", "storage", "declarativeContent","activeTab", 
      "webRequest",
      "webRequestBlocking",
      "<all_urls>"], 
    "background": {
        "scripts": ["background.js"],
        "persistent": true
      },
      "page_action": {
        "default_popup": "popup.html",
        "default_icon": {
            "16": "images/get_started16.png",
            "32": "images/get_started32.png",
            "48": "images/get_started48.png",
            "128": "images/get_started128.png"
          }
      },
      "icons": {
        "16": "images/get_started16.png",
        "32": "images/get_started32.png",
        "48": "images/get_started48.png",
        "128": "images/get_started128.png"
      },

	"content_scripts": 
	[
		{
			"matches": ["*://detail.1688.com/*", "*://www.aliexpress.com/*", "*://aliexpress.com/*" ],
			"js": ["jquery.min.js","content-script.js"],
			"css": ["custom.css"],
			"run_at": "document_start"
		}
    ],
    
    "manifest_version": 2
  }