1.动态id定位不到元素 for example:         //WebElement xiexin_element = driver.findElement(By.id("_mail_component_82_82"));         WebElement xiexin_element = driver.findElement(By.xpath("//span[contains(

1.部分属性 (对于页面上有动态变化的属性的元素是非常有用的) ^=  driver.findElement(By.cssSelector(Input[id ^ =‘ ctrl’]));匹配到id头部 如ctrl_12 $=  driver.findElement(By.cssSelector(Input[id ^ =‘ ctrl’]));匹配到id尾部 如a_ctrl *=