chrome插件实现替换js

manifest.json

{
    "manifest_version": 2,
    "name": "插件名字",
    "description": "插件描述.",
    "version": "1.0",
    "permissions": [
        "webRequest",
        "webRequestBlocking",
        "https://xiapi.xiapibuy.com/"
    ],
    "background":{
        "scripts":[
            "bg.js"
        ]
    },
    "page_action": {
        "default_icon": "logo.png",
        "default_title": "虾皮"
    },
    "web_accessible_resources": [
        "hook.js"
    ]
}

bg.js

chrome.webRequest.onBeforeRequest.addListener(
    function(details) {
      return {redirectUrl: chrome.extension.getURL("hook.js")}; //hook.js是你要替换的js脚本
    },
    {
      urls: ["*://xxxx/xxx/xxx.js"],  //你要拦截的url地址
      types: ["script"]       //拦截类型为script，
  
    },
    ["blocking"] //类型blocking为拦截,
  );

目录结构