javascript function

Posted under » JavaScript on 08 June 2009

You can call functions from other functions, from events, or from any code block.

<p id="demo"></p>
<button onclick="showHello()">Click Me</button>

<script>
function sayHello() {
  return "Hello World";
}

function showHello() {
  document.getElementById("demo").innerHTML = sayHello();
}
</script>

Other than logging to console, use getElementById to show your function output.

sayHello does not run the function. You must use sayHello().