I need to get multiple checkbox values from HTML to JavaScript

And how I send those data from JavaScript to PHP side to store

in our database

<div class="form-group color-option">

   <?php

      $color_rs = Database::search("SELECT * FROM `color`");
      $color_num = $color_rs->num_rows;

      for ($x = 0; $x < $color_num; $x++) {
       $color_data = $color_rs->fetch_assoc();

      ?>

      <input type="checkbox" id="color" multiple value="<?php echo $color_data['color_id'];>"/>
     <label for="color"><?php echo $color_data['color_name']; ?></label>

   <?php

       }

   ?>
</div>