Selecting drop down value using JavaScript in Selenium

In some web applications, when we select a value from the drop down, new controls or elements appear or disappear on the webpage. In short, change event is fired. But sometimes, change event does not get fired after selecting the value from drop down using selenium.

In such scenarios, we can use JavascriptExecutor to fire the change event on drop down element as shown in below code.

protected void fireChangeEvent(WebElement element){
        ((JavascriptExecutor) driver).executeScript(" var evt = 
document.createEvent('HTMLEvents'); evt.initEvent('change',true,true); 
arguments[0].dispatchEvent(evt);",element);
    }

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