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Defer parsing of JavaScript - by designerobot

This topic has 5 replies, 2 voices, and was last updated 5 years, 3 months ago ago by Olga Barlow

designerobot

Participant

September 15, 2019 at 03:46
Hello, I’ve a problem with all my websites where I’m using your beautiful theme.
If I test the website with the GTmetrix tool, the result is always that I need to “Defer parsing of JavaScript”.
To do it I have two possibilities:

1) install and active “Async JavaScript” plugin
or
2) insert this code in function.php
```
function defer_parsing_of_js ( $url ) {
if ( FALSE === strpos( $url, '.js' ) ) return $url;
if ( strpos( $url, 'jquery.js' ) ) return $url;
return "$url' defer ";
}
add_filter( 'clean_url', 'defer_parsing_of_js', 11, 1 );
```
Well, whatever process I use, I solve the problem (as you can see by the links in PVT). However, with both methods, there is a problem: the buttons on the Portfolio page stop working.
How to solve the problem? Maybe could I exclude the Portfolio page only in some way?

Please, contact administrator
for this information.
#221383 Copied Theme version: 6.0
4 Answers

Olga Barlow

Support staff

September 16, 2019 at 17:18

Hello,

You may try cache plugin and JS minification+combination in one and after that try to defer them.
Let me know if it does not work for you.

Regards

#221469 Copied

Olga Barlow

Support staff

September 16, 2019 at 17:19

P.S. clean_url function is deprecated https://developer.wordpress.org/reference/functions/clean_url/

Regards

#221470 Copied

designerobot

Participant

September 17, 2019 at 15:55

Hello,

How to “try cache plugin and JS minification+combination in one” and after how to “defer them”.

What plugin (or code) do you suggest to use in both cases?

I’m not sure to have understood how to do it.

#221524 Copied

Olga Barlow

Support staff

September 18, 2019 at 11:29

Hello,

Use cache plugin for these purposes: W3 Total cache, WPRocket or any other that includes these options, for example, http://prntscr.com/p7oikg

Regards

#221580 Copied
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