I want to defer parsing of javascript, i have done some modifications but how to i check if they are working or not

[admin]

I am using

wordpress

for my website. Now i want to improve my website speed i have checked it on <a href="https://developers.google.com/speed/pagespeed/insights/" rel="nofollow">google page speed test</a> and <a href="http://gtmetrix.com/" rel="nofollow">gtmetrix</a> there are certain errors like

parsing of javascript

,

compreess images

,

minify html

,

minify css

, etc. Then i started search to fix those erros, So, for

parsing of javascript

i have found some solutions like this <a href="http://www.laplacef.com/how-to-defer-parsing-javascript-in-wordpress/" rel="nofollow">How To Defer Parsing Javascript in WordPress</a> i have also placed the code in my

functions.php

file as suggested on that link.

Now i am going back to

googe page speed test

and

gtmetrix

re-checking the

parsing of javascript

is still there. I have tried lot of solutions from google but i am not able to understand that how do i check them if they are applied or not.?

Any help would be appreciated.