Lot's of small improvements

UI/Base/Button.ts

@@ -0,0 +1,38 @@
+import {UIElement} from "../UIElement";
+
+export class Button extends UIElement {
+    private _text: UIElement;
+    private _onclick: () => void;
+    private _clss: string;
+
+    constructor(text: UIElement, onclick: (() => void), clss: string = "") {
+        super(undefined);
+        this._text = text;
+        this._onclick = onclick;
+        if (clss !== "") {
+
+            this._clss = "class='" + clss + "'";
+        }else{
+            this._clss = "";
+        }
+    }
+
+
+    protected InnerRender(): string {
+
+        return "<form>" +
+            "<button id='button-"+this.id+"' type='button' "+this._clss+">" + this._text.Render() +  "</button>" +
+            "</form>";
+    }
+
+    InnerUpdate(htmlElement: HTMLElement) {
+        super.InnerUpdate(htmlElement);
+        const self = this;
+        console.log("Update for ", htmlElement)
+        document.getElementById("button-"+this.id).onclick = function(){
+            console.log("Clicked");
+            self._onclick();
+        }
+    }
+
+}