put a string with html/Javascript into selenium webdriver

Question

I have a html document in memory as a string. It contains a

Answer 1

Just a small update: escapeEcmaScrip() replaces escapeJavaScript() in 2015.

public static void main(String[] args) throws InterruptedException{ 
    driver = new FirefoxDriver();
    driver.get("http://dhtmlx.com/docs/products/dhtmlxTree/");
    replaceHTML(By.xpath("//*/span[text()='Supported browsers:']"), "Click Me!");
}

 private static void replaceHTML(By by, String html) {
      WebElement e = driver.findElement(by);
     ((JavascriptExecutor) driver).executeScript("arguments[0].innerHTML='" + StringEscapeUtils.escapeEcmaScript(html) + "'", e);

}