diff --git a/src/attributes/ErrorAttribute.ts b/src/attributes/ErrorAttribute.ts
new file mode 100644
index 0000000..5dbf242
--- /dev/null
+++ b/src/attributes/ErrorAttribute.ts
@@ -0,0 +1,65 @@
+import AbstractAttribute from "./AbstractAttribute";
+import AttributeListeners from "./AttributeListeners";
+import AttributeIdentity from "./Interfaces/AttributeIdentity";
+import { evalF } from "../Functions";
+
+/**
+ * elements
+ * if input has type and type == type time week
+ * then it will set the value to a new date of the value
+ *
+ *
+ * ex:
+ * "child:value:queryselector"
+ * or
+ * "child:text:queryselector"
+ * or
+ * "child:attributeName:queryselector"
+ *
+ *
+ * @export
+ * @class FMDefaultAttribute
+ * @extends {FMAttribute}
+ * @implements {FMAClearInterface}
+ * @implements {FMAFormInitInterface}
+ */
+export default class ErrorAttribute
+extends AbstractAttribute {
+	public trigger(attrs: AttributeListeners): void {
+		if (attrs === AttributeListeners.INPUT_UNFOCUS) {
+			if (!this.input.verify()) {
+				this.activate()
+				return
+			}
+			const errorClasses = this.input.element.dataset.errorClass
+			if (errorClasses) {
+				this.input.element.classList.remove(...errorClasses.split(" "))
+			}
+
+			return
+		}
+		this.activate()
+	}
+
+	private activate() {
+		const errorClasses = this.input.element.dataset.errorClass
+		const errorRun = this.input.element.dataset.errorRun
+		if (errorClasses) {
+			this.input.element.classList.add(...errorClasses.split(" "))
+		}
+		if (errorRun) {
+			evalF(errorRun)
+		}
+	}
+
+	public static listeners: AttributeListeners[] = [
+		AttributeListeners.INPUT_ERROR,
+		AttributeListeners.INPUT_UNFOCUS
+	]
+
+	public static identity: AttributeIdentity = {
+		attribute: ErrorAttribute,
+		dataElement: "data-error"
+
+	}
+}