update,

it114105/itp4513/Assignment/19-20/static/js/initOrder.js

@@ -0,0 +1,52 @@
+var xhr = new XMLHttpRequest();
+var url = "viewCart";
+var json;
+var storeId;
+xhr.open("GET", url);
+xhr.send();
+xhr.onreadystatechange = function () {
+    if (xhr.readyState === 4 && xhr.status === 200) {
+        json = JSON.parse(xhr.responseText);
+        console.log(json);
+        if(json.statue && json.itemCount > 0){
+          let index = 0;
+          var elemt = document.getElementsByTagName("ol")[0];
+          for(var i = 0; i < elemt.childElementCount; i++){
+              if(i == index){
+              elemt.children[i].innerHTML += '<li id="cart"><a href="cart" class="selected"><span><div class="item-count">' + json.itemCount +'</div> Cart</span></a></li>';
+              }
+          }
+        }
+    }
+};
+
+function viewStore(id){
+  //location.replace("store?id=" + id);
+  storeId = id;
+  if(json.storeId != id && json.storeId != null){
+    location.replace("home#wraning-modal");
+  }else{
+    location.replace("store?id=" + id);
+  }
+}
+
+function closeModal(){
+  location.replace("home#");
+}
+
+function clearCart(){
+  var xhr = new XMLHttpRequest();
+  var url = "removeInCart";
+  xhr.open("POST", url, true);
+  xhr.setRequestHeader("Content-Type", "application/json");
+  xhr.onreadystatechange = function () {
+      if (xhr.readyState === 4 && xhr.status === 200) {
+          var json = JSON.parse(xhr.responseText);
+          if(json.statue == true){
+            location.replace("store?id=" + storeId);
+          }
+      }
+  };
+  var data = JSON.stringify({"action": "remove"});
+  xhr.send(data);
+}