将表单数据发送到unctions.php

我有一个隐藏的输入表单，其中有我的自定义产品价格。我希望每次向购物车添加新项目时，都能将此价格（表单）发送给函数，该价格（表单）是用javascript动态生成的。php使用$\\u POST

代码：

HTML

<input id="hiddenfield" type="hidden" action="functions.php" value="foo" 
     name="hiddenfields" />

        <?php echo do_shortcode(\'[add_to_cart id="212"]\');   ?>

JS FILE

函数totalprice（）{

var one=Number(document.getElementById("vol1").value);
var two=Number(document.getElementById("vol2").value);
var three=Number(document.getElementById("vol3").value);
var four=Number(document.getElementById("vol4").value);


var total=one+two+three+four;

var target=document.getElementById("final");

target.innerHTML=total +"€ VDC/ month";

FUNCTIONS.PHP

 add_action(\'woocommerce_before_calculate_totals\',
 \'woocommerce_pj_update_price\'
 , 99 );

function woocommerce_pj_update_price()  {
$custom_price = 100;   
$target_product_id = 212;


    foreach ( WC()->cart->get_cart() as $cart_item_key => $cart_item ) {
        if($cart_item[\'data\']->get_id() == $target_product_id){

            $cart_item[\'data\']->set_price($custom_price);


    }
}

}

$.ajax({ type: "POST", url: php_params.ajaxurl, data: { action:\'mytag_function_name\', your:\'data\', goes:\'here\' }, success: function(data){ // do something }, error: function(errorThrown){ // do something } });

add_action( \'wp_ajax_nopriv_mytag_function_name\', \'mytag_function_name\' ); add_action( \'wp_ajax_mytag_function_name\', \'mytag_function_name\' ); function mytag_function_name(){ // do something with your $_POST data $post = filter_input_array(INPUT_POST); echo "Here\'s my result to get returned to Javascript"; die(); }

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