HTML5 Autofocus and Placeholder Attributes
The autofocus feature is achieved by adding the autofocus attribute. This allows the control to have the focus automatically on page load.
<button id="SubmitButton" autofocus></button>
Placeholder is a feature supported for input fields by adding the attribute placeholder. This feature displays the value provided for the placeholder attribute, like a water mark, until the focus is moved to the input control.
<input type="email" name="EmailTextBox"
placeholder="Please enter email here..."/>