How to place script in footer?

Question

I have a script I want to place in my site's footer. It's not actually a file, just a single line of code (the script source is located at an external URL). So my question is, should I enqueue the script or just copy and paste it into the footer?

Answer 1

If you want to output a single line of javascript, you might not need to put it in a js file and go through enqueuing it and stuff. Simply output it by using the wp_footer() action hook:

add_action('wp_footer','print_my_script');
function print_my_script(){
    echo '<script> // Your script here </script>';
}

However, this is good just for small scripts. For larger script and js files, use wp_enqueue_script() instead.

Answer 2

See wp_enqueue_script() and the $in_footer parameter it supports. Here's an example of how you'd do this from the functions.php file for your theme. Note the last argument is true, which inserts the script into the footer.

<?php
add_action( 'wp_enqueue_scripts', function() {
    wp_enqueue_script( 'my-script', '/path/to/script.js', [], null, true );
} );