Wrong output in Javascript calling function -

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i'm trying print result of javascript function, instead whole function

output 

x7: function   function () { return "hello form function"; }

i want output: hello form function

html

<p id="demo"></p>

javascript 

var x7 = function (){    return "hello form function"; }; document.getelementbyid("demo").innerhtml = "x7: " + typeof x7 + "<br>"+x7+"<br>";

you have use parentheses call function: x7():

<!doctype html> <html> <body>  <p id="demo"></p>  <script>  var x7 = function (){    return "hello form function"; };  document.getelementbyid("demo").innerhtml =  "x7: " + typeof x7 + "<br>"+ x7()+"<br>"; </script>  </body> </html>

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