php - Ajax random number always the same

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I have a button that when I click it should generate a random number using ajax ( It needs to be processed by PHP in real world application).

This works fine except that every time the button is clicked it produces the same random number. Why doesn't the ajax call run the php rand function new each time?

rand.php

function rand_load_scripts() {
    //create an object that is accessible from our Javascript The name of this object is the second parameter, rand_script_vars
    wp_enqueue_script('rand-script', plugin_dir_url( __FILE__ ) . 'assets/rand-script.js');
    //an array of variables to pass to javascript.
    wp_localize_script('rand-script', 'rand_script_vars', array(
            'get_prices' => rand()
        )
    );
 
}
add_action('wp_enqueue_scripts', 'rand_load_scripts');

rand-script.js

jQuery(document).ready(function($) {
        $('#rand_button').on('click', function() {
            console.log( rand_script_vars.get_prices );
        });  
    });

本文标签： phpAjax random number always the same