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HomeWeb Front-endHTML TutorialCss选择器定位详解_html/css_WEB-ITnose

1.使用 class 属性来定位元素,方法如下:

  driver.findElement(By.cssSelector("input.login"));

  即可以先指定一个 HTML的标签,然后加一个“.”符号,跟上 class 属性的值

2.使用相对ID选择器定位元素,方法如下:

  WebElement ele = driver.findElement(By.cssSelector("input#username"));  

  即可以先指定一个 HTML 标签,然后加上一个“#”符号,跟上 id 的属性值

3.除了 class 和 id 属性,CSS 选择器也可以使用其他的元素属性来定位。下面的例子中,将使用中的 Name 属性。

  WebElement userName =driver.findElement(By.cssSelector("input[name=username]"));

4.如果一个属性不足以来定位到一个元素, 则联合使用其他的属性来达到精确匹配。下面的例子中,使用多个属性来定位元素。

  WebElement previousButton =driver.findElement(By.cssSelector("input[type='submit'][value='Login']"));

5.CSS 选择器提供了一个部分属性值匹配定位元素的方法。这为测试那些页面上具有动态发化的属性的元素是非常有用的。例如,在 ASP.NET 应用中,元素 id 是动态生成的。下面的表格介绍了如何使用部分匹配的语法:

a.语法:^=                 例子:Input[id^= ' ctrl']             描述:如果一个元素的ID是ctrl_12,就可以定位到此元素,匹配到 id的头部 ctrl

b.语法:$=                 例子:input[id$='_userName']     描述:如果一个元素的ID 是a_1_userName,返将会匹配到 id 的尾部_userName

c.语法:*=                 例子:Input[id*='userName']       描述:如果一个元素的 ID 是 panel_login_userName_textfield,返将会匹配到此 id 值的_userName

参考网址:http://865325772.iteye.com/blog/2051668

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