How to execute executeScript method through Java in Microsoft Edge through WebDriver

Question

I am trying to run below code in Microsoft Edge through WebDriver

ExpectedCondition<Boolean> jsLoad = driver -> ((JavascriptExecutor) driver).executeScript("return 
document.readyState").toString().equals("complete");

JavascriptExecutor js = (JavascriptExecutor) getDriver();
boolean jsReady = (Boolean) js.executeScript("return document.readyState").toString().equals("complete");

We are getting below exception:

Exception class:org.openqa.selenium.JavascriptException

The reason is:

org.openqa.selenium.JavascriptException: javascript error: Function is not a constructor

We set EdgeOptions like below

DesiredCapabilities desiredCapabilities = new DesiredCapabilities();
desiredCapabilities.setBrowserName("MicrosoftEdge");
EdgeOptions edgeOptions = new EdgeOptions();
edgeOptions.setCapability("ms:inPrivate", true);
edgeOptions.setCapability("prefs", edgePrefs);
edgeOptions.setCapability("useAutomationExtension", false);
edgeOptions.merge(desiredCapabilities);
edgeOptions.setPageLoadStrategy("eager");
edgeOptions.setCapability("ms:inPrivate", true);
edgeOptions.setCapability("useAutomationExtension", false);
edgeOptions.setCapability(CapabilityType.SUPPORTS_JAVASCRIPT, true);
edgeOptions.setCapability(CapabilityType.HAS_NATIVE_EVENTS, true);
driver = new EdgeDriver(edgeOptions);

Any suggestions

Answer 1

executeScript()

Executes JavaScript in the context of the currently selected frame or window. The script fragment provided will be executed as the body of an anonymous function. Within the script, use document to refer to the current document. Note that local variables will not be available once the script has finished executing, though global variables will persist. If the script has a return value (i.e. if the script contains a return statement), then the following steps will be taken:

• For an HTML element, this method returns a WebElement
• For a decimal, a Double is returned
• For a non-decimal number, a Long is returned
• For a boolean, a Boolean is returned
• For all other cases, a String is returned.
• For an array, return a List with each object following the rules above. We support nested lists.
• For a map, return a Map<String, Object> with values following the rules above.
• Unless the value is null or there is no return value, in which null is returned

Arguments must be a number, a boolean, a String, WebElement, or a List of any combination of the above. An exception will be thrown if the arguments do not meet these criteria. The arguments will be made available to the JavaScript via the "arguments" magic variable, as if the function were called via "Function.apply"

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This usecase

If your usecase is to wait for document.readyState to be equal to complete you can induce WebDriverWait as follows:

new WebDriverWait(driver, TimeSpan.FromSeconds(20)).Until(d => ((IJavaScriptExecutor)d).ExecuteScript("return document.readyState").Equals("complete"));