1 package WayToFindElement;
 2 
 3 import java.util.List;
 4 import org.openqa.selenium.JavascriptExecutor;
 5 import org.openqa.selenium.WebDriver;
 6 import org.openqa.selenium.WebElement;
 7 import org.openqa.selenium.firefox.FirefoxDriver;
 8 import org.testng.Assert;
 9 import org.openqa.selenium.WebDriverException;
10 
11 public class FindByJquery {
12 
13     public static void main(String[] args) {
14         TestNotLoadJquery();        
15     }
16 
17     private static void TestLoadedJquery() {
18         WebDriver driver = new FirefoxDriver();
19         driver.manage().window().maximize();
20         JavascriptExecutor jsExecutor = (JavascriptExecutor)driver;
21         driver.get("https://www.baidu.com");
22         
23         List<WebElement> webElements = (List<WebElement>) jsExecutor.executeScript("return jQuery.find(‘a.mnav‘)");
24         Assert.assertEquals(webElements.size(),6);
25         Assert.assertEquals(webElements.get(2).getText(), "hao123");        
26         driver.quit();
27     }
28     
29     private static void TestNotLoadJquery()
30     {
31         WebDriver driver = new FirefoxDriver();
32         driver.manage().window().maximize();
33         JavascriptExecutor jsExecutor = (JavascriptExecutor)driver;
34         driver.get("http://www.2345.com/");
35         if(!jQueryLoaded(jsExecutor)){
36             //如果检测到没有jquery库就执行注入操作
37             inJectJquery(jsExecutor);
38         }
39         //找到搜索一下按钮 元素
40         List<WebElement> searchButton =  (List<WebElement>) jsExecutor.executeScript("return jQuery.find(‘input.sch_btn‘)");
41         //验证按钮的文本
42         Assert.assertEquals(searchButton.get(0).getAttribute("value"), "搜索一下");
43         driver.quit();
44     }
45     
46     /**注入jQuery支持*/
47     public static void inJectJquery(JavascriptExecutor jsExecutor){
48         jsExecutor.executeScript("var headID = document.getElementsByTagName(\"head\")[0];"
49                 + "var newScript = document.createElement(‘script‘);"
50                 + "newScript.type = ‘text/Javascript‘;"
51                 + "newScript.src=\"http://code.jquery.com/jquery-2.1.4.min.js\";"
52                 + "headID.appendChild(newScript);");
53     }    
54     
55     
56     /**判断当前页面是否使用了jQuery*/
57     public static  Boolean jQueryLoaded(JavascriptExecutor jsExecutor){
58         Boolean loaded = true;
59         try{
60             loaded = (Boolean) jsExecutor.executeScript("return jQuery()! = null");
61         }catch(WebDriverException e){
62             loaded = false;
63         }
64         
65         return loaded;
66     }
67 }