public static void WaitUnit<T>(this IWebDriver webDriver, Func<IWebDriver, T> func, int seconds = 20){var wait = new WebDriverWait(webDriver, TimeSpan.FromSeconds(seconds));wait.Until(func);}/// <summary>/// 强制让webdriver等待，直到给定的元素(by)存在于DOM之中/// </summary>public static void WaitElementExist(this IWebDriver webDriver, By by, int seconds = 20){var wait = new WebDriverWait(webDriver, TimeSpan.FromSeconds(seconds));wait.Until(ExpectedConditions.ElementExists(by));}/// <summary>/// 强制让webdriver等待，直到给定的元素(by)的CSS属性visiblity的值为visible/// </summary>public static void WaitElementVisible(this IWebDriver webDriver, By by, int seconds = 20){var wait = new WebDriverWait(webDriver, TimeSpan.FromSeconds(seconds));wait.Until(ExpectedConditions.ElementIsVisible(by));}/// <summary>/// 强制让webdriver等待，直到当前的浏览器title包含指定的字符串/// </summary>public static void WaitTitleContains(this IWebDriver webDriver, string title, int seconds = 20){var wait = new WebDriverWait(webDriver, TimeSpan.FromSeconds(seconds));wait.Until(ExpectedConditions.TitleContains(title));}/// <summary>/// 强制让webdriver等待，直到当前的浏览器title与给定读的title一致/// </summary>public static void WaitTitleIs(this IWebDriver webDriver, string title, int seconds = 20){var wait = new WebDriverWait(webDriver, TimeSpan.FromSeconds(seconds));wait.Until(ExpectedConditions.TitleIs(title));}/// <summary>/// Executes JavaScript in the context of the currently selected frame or window./// </summary>/// <param name="webDriver">IWebDriver实例</param>/// <param name="jsCode">js代码(最好的web里面先执行一次，确保正确性)</param>public static void ExecJavascript(this IWebDriver webDriver, string jsCode){((IJavaScriptExecutor)webDriver).ExecuteScript(jsCode);}