focus js

document.getElementById("ThingToSetFocusOn").focus();focusMethod = function getFocus() {          
  document.getElementById("myButton").focus();
}focusMethod = function getFocus() {           
  document.getElementById("myTextField").focus();
}<input type="text" id="myTextField" value="Text field.">
<p></p>
<button type="button" onclick="focusMethod()">Click me to focus on the text field!</button>