Exception thrown by org.openqa.selenium.JavascriptException: SyntaxError: an unescaped line break was found within a string literal during the execution of executeScript in Selenium

Received org.openqa.selenium.JavascriptException: SyntaxError: The string literal contains an unescaped line break while utilizing executeScript in Selenium.

executeScript() works flawlessly with a single-line String, like this example:

String myText = "80120804076";

However, when attempting to send a multiline String, it results in a JavascriptException.

  • Here are the code trials:

    import org.openqa.selenium.By;
import org.openqa.selenium.JavascriptExecutor;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.support.ui.ExpectedConditions;
import org.openqa.selenium.support.ui.WebDriverWait;

public class send_large_text {

    static WebDriver driver;
    public static void main(String[] args) {
        System.setProperty("webdriver.gecko.driver", "C:\\Utility\\BrowserDrivers\\geckodriver.exe");
        driver = new FirefoxDriver();
        driver.get("https://translate.shell.com/");
        
        String myText = "No, there is no way to hide the console window of the chromedriver.exe \n"
            + "in the .NET bindings without modifying the bindings source code. This is seen \n"
            + "as a feature of the bindings, as it makes it very easy to see when your code \n"
            + "hasn\'t correctly cleaned up the resources of the ChromeDriver, since the console window \n"
            + "remains open. In the case of some other languages, if your code does not properly clean up \n"
            + "the instance of ChromeDriver by calling the quit() method on the WebDriver object, \n"
            + "you can end up with a zombie chromedriver.exe process running on your machine.";
        
        (   (JavascriptExecutor) driver).executeScript("arguments[0].value=\'" + myText + "\';", new WebDriverWait(driver, 20).until(ExpectedConditions.elementToBeClickable(By.cssSelector("textarea.form-control#translateText"))));
    }
}

  • Error Encountered:

    1544184402064   mozrunner::runner   INFO    Running command: "C:\\Program Files\\Mozilla Firefox\\firefox.exe" "-marionette" "-foreground" "-no-remote" "-profile" "C:\\Users\\ATECHM~1\\AppData\\Local\\Temp\\rust_mozprofile.b4OAHY7RViE6"
// More error logs here

I've reviewed the related discussions:

  • Java:
    • Java multiline string
  • JavaScript:
    • How do I break a string across more than one line of code in JavaScript?

For further reference: SyntaxError: unterminated string literal

If anyone has insights on where I might be going wrong, please assist. Thank you!

javascriptjavaseleniumselenium-webdriverwebdriver

Answer №1

Below are the steps that resolved the issue for me:

1) I included an additional backslash before every \n changing it to \\n

2) I added an extra backslash before the apostrophe in hasn\'t to make it hasn\\'t

"No, there is no way to hide the console window of the chromedriver.exe \\n"
                + "in the .NET bindings without modifying the bindings source code. This is seen \\n"
                + "as a feature of the bindings, as it makes it very easy to see when your code \\n"
                + "hasn\\'t correctly cleaned up the resources of the ChromeDriver, since the console window \\n"
                + "remains open. In the case of some other languages, if your code does not properly clean up \\n"
                + "the instance of ChromeDriver by calling the quit() method on the WebDriver object, \\n"
                + "you can end up with a zombie chromedriver.exe process running on your machine.";

Answer №2

Have you attempted utilizing this approach:

String myText = {"Unfortunately, the console window of chromedriver.exe cannot be hidden",
                 "in the .NET bindings without making changes to the source code. This design choice",
                 "is intentional as it helps in easily identifying issues when resources are not properly cleaned up",
                 "after using ChromeDriver. The open console window serves as a warning sign. In some other programming languages,",
                 "if the ChromeDriver instance is not correctly handled by calling the quit() method on the WebDriver object,",
                 "it can result in a lingering zombie chromedriver.exe process on your system."}.join("\n");

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