主要功能是打开任意网页插件会自动判断URL是否是form.php结尾，如果是则按照规则自动填写网页表单，如果不是则略过。

Manifest.json

{
  "name": "智能表单助手",
  "description": "自动填充***申请友情链接表单",
  "version": "1.0",
  "permissions": [
    "tabs", "http://*/plus/flink_add.php", "https://*/plus/flink_add.php"
  ],
  "background": {
    "scripts": ["background.js"],
    "persistent": false
  },
  "browser_action": {
      "default_title": "自动填充***申请友情链接表单",
      "default_icon": "bird.png" 
  },
  "manifest_version": 2
}

// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Called when the user clicks on the browser action.

function check***(url){
    console.log('URL:'+url);
    var flag = false;
    if(typeof url == "undefined" || null == url)
        url = window.location.href; 
    var regex = /.*\:\/\/.*\/form.php/;
    var match = url.match(regex);
    if(typeof match != "undefined" && null != match)
        flag = true;
    return flag;
}
function autoAddValue()
{  
    chrome.tabs.executeScript(null,
        {code:" var inputs = document.querySelectorAll('input');                inputs[1].value=http://www.mamicode.com/'http://www.xxx.com.cn/';				inputs[2].value='xxxx';				inputs[3].value='http://www.xx.com.cn/xxx';				inputs[4].value='xxx@163.com';				var textareas = document.querySelectorAll('textarea');				textareas[0].value='xxxx';        "}); >
完整代码下载：http://download.csdn.net/detail/nerslegmail/8308589
chrome 自动填写表单插件