woocommerce/assets/js/frontend/cart.min.js

jQuery(document).ready(function(e){e(document).on("click",".shipping-calculator-button",function(){e(".shipping-calculator-form").slideToggle("slow");return!1}).on("change","select#shipping_method, input[name^=shipping_method]",function(){var t=[];e("select#shipping_method, input[name^=shipping_method][type=radio]:checked, input[name^=shipping_method][type=hidden]").each(function(n,r){t[e(this).data("index")]=e(this).val()});e("div.cart_totals").block({message:null,overlayCSS:{background:"#fff url("+wc_cart_params.ajax_loader_url+") no-repeat center",backgroundSize:"16px 16px",opacity:.6}});var n={action:"woocommerce_update_shipping_method",security:wc_cart_params.update_shipping_method_nonce,shipping_method:t};e.post(wc_cart_params.ajax_url,n,function(t){e("div.cart_totals").replaceWith(t);e("body").trigger("updated_shipping_method")})});e(".shipping-calculator-form").hide()});