//執行方式
JavascriptExecutor jsExecutor = (JavascriptExecutor) driver;
jsExecutor.executeScript("js程式碼");

/**
 * 
 */
package lessons;

import java.util.concurrent.TimeUnit;

import org.openqa.selenium.By;
import org.openqa.selenium.JavascriptExecutor;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;

/**
 * @author 北京-宏哥
 * 
 * 《手把手教你》系列技巧篇（四十）-java+ selenium自動化測試-JavaScript的調用執行-下篇（詳解教程）
 *
 * 2021年11月5日
 */
public class AddColor {
    
public static void main(String[] args) throws Exception {  
        
        System.setProperty("webdriver.chrome.driver", ".\\Tools\\chromedriver.exe");  
           
        WebDriver driver = new ChromeDriver();  
     
        driver.manage().window().maximize();  
       
        driver.manage().timeouts().implicitlyWait(5, TimeUnit.SECONDS);
          
        driver.get("//www.baidu.com/");  
       
        Thread.sleep(2000);
        
        // 點擊登錄
        driver.findElement(By.xpath("//*[@id='u1']/a")).click();
        Thread.sleep(500);
        
        WebElement username = driver.findElement(By.id("TANGRAM__PSP_11__userName"));
        
        // 創建一個JavascriptExecutor對象
        JavascriptExecutor js= (JavascriptExecutor)driver;
        
        username.sendKeys("abcdefg");
        
        // 設置顏色
        js.executeScript("arguments[0].setAttribute('style', 'background: yellow; border: 2px solid red;');",username);
        
        WebElement password = driver.findElement(By.id("TANGRAM__PSP_11__password"));
        js.executeScript("arguments[0].setAttribute('style', 'background: yellow; border: 2px solid red;');",password);
        
        WebElement submit = driver.findElement(By.id("TANGRAM__PSP_11__submit"));
        js.executeScript("arguments[0].setAttribute('style', 'background: yellow; border: 2px solid red;');",submit);
        
       
    }  

}