谷歌浏览器插件开发教程2
谷歌浏览器插件控制网页内容的方法
1 首先写配置文件(注意下content_scripts 这个里面的js 是控制页面的js
{ "name": "todo-plugin", "version": "0.9.0", "manifest_version": 2, "description": "chrome plugin demo", "browser_action": { "default_icon": "icon.png", "default_title": "Todo List", "default_popup": "popup.html" }, "content_scripts": [{ //对页面内容进行操作的脚本 "matches": ["http://*/*","https://*/*"], //满足什么条件执行该插件 "js": ["jquery.min.js","test.js"] }] }
2 然后页面上写test.js
var kw = $('#kw'); chrome.runtime.onMessage.addListener( function (request, sender, sendResponse) { if (request.action == "send") { kw.val(request.keyword) sendResponse({state:'填写成功!'}); } } );
3 插件html
<!doctype html> <html> <head> <meta http-equiv="content-type" content="txt/html; charset=utf-8" /> <title>Document</title> </head> <body> <script src="jquery.min.js"></script> <script src="test1.js"></script> </body> </html>
test1.js 给页面发送请求 到test.js
$(function(){ chrome.tabs.query({active:true, currentWindow:true}, function (tab) {//获取当前tab //向tab发送请求 chrome.tabs.sendMessage(tab[0].id, { action: "send", keyword: "关键字" }, function (response) { console.log(response); }); }); })
好了 打开www.baidu.com 然后点击图标测试 是不是直接搜索关键字了
ps:如果报错 Unchecked runtime.lastError: Could not establish connection. Receiving end does not exist. 那是test.js里面的代码运行出错了 如果不是运行百度页面就会这样 因为匹配不到元素