谷歌(Chrome)浏览器自定义插件

准备

1.js文件：需要的功能逻辑

2.插件主入口及配置：manifest.json

3.插件图标

目录结构：

添加插件流程（选择插件文件夹）

代码

manifest.json

{ 
"name": "百度", 
"manifest_version": 2, 
"version": "1.0", 
"description": "百度图片", 
"browser_action": { 
    "default_icon": "1.png" 
},
"permissions": [
    "tabs", "http://*/*","https://*/*"
],
"content_scripts": [
		{ 
			"matches": ["https://www.baidu.com/*"], 
			"js": ["myscript.js"] 
		} 
	]
}

 myscript.js

let su=document.getElementById("su");
su.value = "帅气你刚哥";
let logo=document.getElementById("s_lg_img");
logo.src="http://img3.duitang.com/uploads/item/201511/07/20151107070924_WnJar.gif";

setInterval(su.click(),1000);

效果