xuan exuan

## getExtension.php
echo pathinfo($file, PATHINFO_EXTENSION);

## chrome_extension_get_cookie.js
// 获取单个cookie
chrome.cookies.get( {
  url: 'http://iciba.com',
  name: '_ustat' },
  function( cookie ){
    console.log( cookie );
  });

// 获取多个cookie，并设置到当前插件页面下
chrome.cookies.getAll( { domain: '.iciba.com'}, function( cookie ){
	// 获取单个cookie
	chrome.cookies.get( {
	url: 'http://iciba.com',
	name: '_ustat' },
	function( cookie ){
	console.log( cookie );
	});

	// 获取多个cookie，并设置到当前插件页面下
	chrome.cookies.getAll( { domain: '.iciba.com'}, function( cookie ){