I have a very simple jsfiddle but it results in an error saying Uncaught ReferenceError: doSomething1 is not defined or Uncaught ReferenceError: doSomething2 is not defined. 
Both these methods are defined.
jsfiddle: https://jsfiddle.net/fjd4hzcz/3/
Question
What is wrong with this jsfiddle that is causing the methods to be not recognized?
My code is very simple as below.
<button id="btn1" onclick="doSomething1();return false;">Call doSomething1 method</button>
<button id="btn2" onclick="doSomething2();return false;">Call doSomething2 method</button>
<script>
function doSomething1() {
  alert("hi 1");
}
function doSomething2() {
  alert("hi 2");
}
</script>
 
    
 
    