php - Cart is not Empty Woocommerce Wp jQuery -

i customizing woocommerce wp right , have problem.

how check woocommerce cart using jquery? reason why need want make animations site using jquery when user clicks on product add cart button.

the scenario like: user adds product , site i'm developing gives 1 products, meaning cant buy more (1) product @ time. when user done clicking or buying product , home/product page , clicks add cart button on other product want popup using jquery. problem don't know how it. thank in advance answers.

modify product or home page , add on own button onclick function product id parameter. make ajax call in function .

function somefunction(productid) {    $.ajax({     type : "post",   url: 'wwww.siteurl.com/wp-admin/admin-ajax.php',   data: {   action: 'myajax',pid:productid    },   success: function(data){ alert(data); // error message user see.use javascript make popup      },   error: function(mlhttprequest, textstatus, errorthrown){   alert(errorthrown);   }   });  } 

in function.php

function myajax() { $product_id = $_post['pid'];          if(wc()->cart->cart_contents_count <1) {     wc()->cart->add_to_cart( $product_id ); echo "success"; die(); } else { echo "not more 1 product can added"; // error return jquery function //  die();  }  } add_action('wp_ajax_myajax', 'myajax'); add_action('wp_ajax_nopriv_myajax', 'myajax'); 

hope ...