Rewrite task move position component and remove Vuejs

assets/js/core/http.js

@@ -0,0 +1,66 @@
+KB.http.request = function (method, url, headers, body) {
+    var successCallback = function() {};
+    var errorCallback = function() {};
+
+    function parseResponse(request) {
+        try {
+            return JSON.parse(request.responseText);
+        } catch (e) {
+            return request.responseText;
+        }
+    }
+
+    this.execute = function () {
+        var request = new XMLHttpRequest();
+        request.open(method, url, true);
+        request.setRequestHeader('X-Requested-With', 'XMLHttpRequest');
+
+        for (var header in headers) {
+            if (headers.hasOwnProperty(header)) {
+                request.setRequestHeader(header, headers[header]);
+            }
+        }
+
+        request.onerror = function() {
+            errorCallback();
+        };
+
+        request.onreadystatechange = function() {
+            if (request.readyState === XMLHttpRequest.DONE) {
+                var response = parseResponse(request);
+
+                if (request.status === 200) {
+                    successCallback(response);
+                } else {
+                    errorCallback(response);
+                }
+            }
+        };
+
+        request.send(body);
+        return this;
+    };
+
+    this.success = function (callback) {
+        successCallback = callback;
+        return this;
+    };
+
+    this.error = function (callback) {
+        errorCallback = callback;
+        return this;
+    };
+};
+
+KB.http.get = function (url) {
+    return (new KB.http.request('GET', url)).execute();
+};
+
+KB.http.postJson = function (url, body) {
+    var headers = {
+        'Content-Type': 'application/json',
+        'Accept': 'application/json'
+    };
+
+    return (new KB.http.request('POST', url, headers, JSON.stringify(body))).execute();
+};