php - Add Tip input by customer to woocommerce checkout page -


i developing food ordering woocommerce store. trying add input field or grouped button let customer add delivery tips checkout total.

backend part: wrote action add tip checkout based on percentage given (let's 10% of total order)

 add_action( 'woocommerce_cart_calculate_fees', 'calculatetipspercentage', 10, 1 ); function calculatetipspercentage( $cart ) {      if ( is_admin() && ! defined( 'doing_ajax' ) )         return;      $total_tax = 0;     $carttotal= 0;     // unformated taxes array     $taxes = $cart->get_taxes();       //get tax amount taxes array     foreach($taxes $tax) $total_tax += $tax;       global $woocommerce;      $percentage = 0.10;//percentage of tips (must entered customer)    $carttotalamount = ( $woocommerce->cart->cart_contents_total + $woocommerce->cart->shipping_total );  //cart total without tax    $totalorderwithtax = ( $carttotalamount +  $total_tax); //cart total tax     $extrafee= round( $totalorderwithtax  * $percentage, 2 ); //extra fee amount      $percetagetoshow = ( $percentage * 100 );        $woocommerce->cart->add_fee( "tip ({$percetagetoshow}%)", $extrafee, true, '' );     }

my problem front-end part.

how can add kind of input field button (add tips checkout) let customer add percentage , click button fire action found above. or if can through ajax/jquery without button (without refreshing page) better.

any appreciated.


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