I am amazed while using this, but yes, literally, we can alter the context of any element by selecting them using the following format in JavaScript and change the content.


    document.getElementsByTagName('small')[2].innerHTML = "* Notice: image size must be 1900 x 300 px recommended"

and also 
  document.querySelector('#image > small').innerHTML = "* Notice : Image size don't matter but not more than 1MB recommended";