How can I add script to header and footer without plugin?

I want to add my google analytic code to my footer or header.
use of several plugins make my site slower and slower.
can show me a way to add this code to my theme?

Hi,

Try to add the following PHP code snippet to the child theme functions.php file to do this

/* Add Google analytics tracking code */
add_action('wp_head', 'woodmart_ga'); 
function woodmart_ga() { ?> 
 <script>   
(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){   (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),   m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)   })(window,document,'script','https://www.google-analytics.com/analytics.js','ga');    
 
ga('create', 'UA-XXXXXXXX-X, 'auto');   //Replace X with your UA ID 
ga('send', 'pageview');  
</script> 
<?php }

thanks.

You are welcome!

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