updates

src/utils/Ut.js

@@ -15,14 +15,10 @@ export class Ut {
 
 	static trigger = (handler, ...args) => typeof handler === 'function' ? handler.call(this, ...args) : null;
 
-	static each(obj, callback, context) {
-		for (let key in obj) {
-			callback.call(context || this, obj[key], key);
-		}
-	}
+	static each = (obj, callback, context) => obj && Object.keys(obj).forEach(key => callback.call(context ?? this, obj[key], key) );
 
 	static tplString = (str, context) => new Function('return `' + str + '`;').call(context || {});
-
+	
 	static extendNode(name, value) {
 
 		if (!Object.getOwnPropertyDescriptor(Node.prototype, name)) {

src/utils/dom.js

@@ -40,6 +40,11 @@
 			if (attr[name] === null) {
 				continue;
 			}
+			
+			if (name == 'className') {
+				elem.className = attr[name];
+				continue;
+			}
 
 			elem.setAttribute(name, attr[name]);
 		}

src/utils/form-validator/FormValidator.js

@@ -210,7 +210,7 @@ export class FormValidator extends Validator {
 
 			fieldWrapper.classList.add('form-field-error');
 
-			fieldWrapper.append( El('div', { class: 'sp-label-error' }, emsg ) );
+			fieldWrapper.append( El('div', { className: 'sp-label-error' }, emsg ) );
 		}
 
 		return false;

src/utils/form-validator/InputError.js

@@ -29,7 +29,7 @@ export class InputError {
 	*/
 	create() {
 		this.fieldWrapper.classList.add('form-field-error');
-		this.fieldWrapper.append( El('div', { class: 'sp-label-error' }, this.emsg) );
+		this.fieldWrapper.append( El('div', { className: 'sp-label-error' }, this.emsg) );
 	}
 
 	/**

src/utils/form-validator/Validator.js

@@ -287,7 +287,7 @@ export class Validator {
                     let uploader = el.dxData('uploader');
 
                     if (uploader) {
-                        uploader.getFiles().forEach(filename => fdata.append('files_' + el.name + '[]', filename));
+                        uploader.getFiles().forEach(filename => fdata.append('file__' + el.name + '[]', filename));
                     }
                     
                 break;