How can I have a drop down box where you pick something and it sets the HTML <title> tag set to what the drop down is set on?

Question

This is what I have but I don't know how to get it to a variable in JS

<select>
  <option value="1">1</option>
  <option value="2">2</option>
  <option value="3">3</option>
  <option value="4">4</option>
</select>

<button onclick="myFunction()">set</button>

<script>
function myFunction() {
  var x = document.title;
}
</script>

Answer 1

In this code you are storing current title in var x. you need to write like this:

document.title="Some Text or variable";

if you need to set value of dropdown item as title then to give id to select tag then var newtitle = document.getElementById("id_of_selectTag").value; document.title=newtitle;