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I'm creating a plugin that has some external Javascript and some AJAX calls ... but I don't know the best way to make reference to the admin-ajax.php file since the path requires some input from PHP (paths and such).

Should I declare a global javascript variable?

What is the best way to accomplish this?

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1 Answer

up vote 1 down vote accepted

What you need to do is register and/or enqueue your script and then use wp_localize_script to include a Javascript variable on your page. The Codex page has this example:

wp_enqueue_script( 'some_handle' );
$translation_array = array( 
    'some_string' => 
    __( 'Some string to translate' ), 
    'a_value' => '10' 
);
wp_localize_script( 'some_handle', 'object_name', $translation_array );

You can then access the variable with, to quote the same Codex page:

<script>
alert(object_name.some_string); // alerts 'Some string to translate'
</script>
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