title: Selenium WebDriver JS - Explicit Wait
body: <p>I am using the selenium-webdriverjs. I want to wait for a certain element to be displayed for which I have created an explicit wait as follows and it works just fine,</p>
  
  <pre><code>var displayed = false;
  driver.wait(function(){
      driver.findElement(locator).isDisplayed().then(function(value){
          displayed = value;
      });
      return displayed;
  }, timeout);
  </code></pre>
  
  <p>Is this the best I can do or is there a better way to do this? The reason I ask is that the first time ever the wait callback is called (in my case) it will always return false. Only subsequently when the isDisplayed promise is executed will the value of displayed change. </p>