定義后，我能這樣寫代碼

　　def submit_order

　　s('button#submit').click

　　end

　　The short method name "s" is inspired by jQuery. Here it will keep polling the DOM for 10 seconds until it finds the button with id "submit". It's like implicit wait but only for finding one element. When you really need to wait for multiple elements， you can use an explicit wait， which， to me， makes more sense than a hidden implicit one.

　　短方法 s 的靈感是來源于jQuery。 它會輪詢DOM 10秒，直到它在找到一個(gè)id 為'submit'的button 為止。當(dāng)只找一個(gè)元素時(shí)，用隱式等待是恰當(dāng)?shù)模��?dāng)你真的需要定位多個(gè)對象的時(shí)候，你應(yīng)該使用顯示等待，對我來說，這樣有意義。

　　譯者注：關(guān)于顯式等待和隱式等待的區(qū)別，請看下面討論及文檔，有助于理解我在翻譯什么... : (

　　http://groups.google.com/group/selenium-users/browse_thread/thread/fd0cb59b953f5e94/123380cef05d7bdb?lnk=raot

　　http://seleniumhq.org/docs/04_webdriver_advanced.html

　　Set the initial browser window size when using Chromedriver.

　　當(dāng)在使用Chromedirver時(shí)，設(shè)定瀏覽器窗口初始化大小

　　Ruby code:

　　profile = Selenium::WebDriver::Chrome::Profile.new

　　profile['browser.window_placement.top'] = 0

　　profile['browser.window_placement.left'] = 0

　　profile['browser.window_placement.right'] = 1024

　　profile['browser.window_placement.bottom'] = 768

　　driver = Selenium::WebDriver.for :chrome， profile: profile

　　This works in both Windows and OSX (will try Linux and update here)

　　Bad news for Java， C# and Python coders though， it seems that as of now setting chrome preference is not supported in the java version of Webdrive. Your best chance could be creating a ChromeProfile class based on the exiting FirefoxProfile class.

　　以上的代碼在windows 和 OSX 上都工作正常。壞消息是，對于Java ， C# 和Python 的coder 來說，看上去現(xiàn)在Java版本的webdriver還不支持設(shè)定chrome 的屬性。 你好是基于現(xiàn)有的FirefoxProfile 類來創(chuàng)建一個(gè)ChromeProfile 類。

　　Scroll to a button before clicking it.

　　滾動到相應(yīng)的button后才點(diǎn)擊

　　Clicking buttons sometimes randomly fail. It could be caused by the fact that the button is out of the view area at the moment you command selenium to click it. One way to address it is to always scroll to it before clicking it.

　　點(diǎn)擊button有時(shí)候會無故失敗，這可能是由于selenium 執(zhí)行點(diǎn)擊命令的時(shí)候，這個(gè)button在視圖之外。所以解決這個(gè)問題的其中一個(gè)方法是，滾動到相應(yīng)的button后才點(diǎn)擊。