diff --git a/src/ecmascript/quickjs/element.c b/src/ecmascript/quickjs/element.c
index eedc524a8..92e075b66 100644
--- a/src/ecmascript/quickjs/element.c
+++ b/src/ecmascript/quickjs/element.c
@@ -2613,14 +2613,18 @@ js_element_appendChild(JSContext *ctx, JSValueConst this_val, int argc, JSValueC
 	dom_exception exc;
 
 	if (argc != 1) {
-		return JS_NULL;
+		return JS_EXCEPTION;
 	}
 
 	if (!el) {
 		return JS_EXCEPTION;
 	}
 	//dom_node_ref(el);
-	dom_node *el2 = (dom_node *)js_getopaque_any(argv[0]);
+	dom_node *el2 = NULL;
+
+	if (!JS_IsNull(argv[0])) {
+		el2 = (dom_node *)js_getopaque_any(argv[0]);
+	}
 
 	if (!el2) {
 		//dom_node_unref(el);
diff --git a/src/ecmascript/quickjs/fragment.c b/src/ecmascript/quickjs/fragment.c
index 06e10e6c4..6782cafa1 100644
--- a/src/ecmascript/quickjs/fragment.c
+++ b/src/ecmascript/quickjs/fragment.c
@@ -1014,14 +1014,18 @@ js_fragment_appendChild(JSContext *ctx, JSValueConst this_val, int argc, JSValue
 	dom_exception exc;
 
 	if (argc != 1) {
-		return JS_NULL;
+		return JS_EXCEPTION;
 	}
 
 	if (!el) {
 		return JS_EXCEPTION;
 	}
 	//dom_node_ref(el);
-	dom_node *el2 = (dom_node *)(js_getopaque_fragment(argv[0], js_fragment_class_id));
+	dom_node *el2 = NULL;
+
+	if (!JS_IsNull(argv[0])) {
+		el2 = (dom_node *)(js_getopaque_fragment(argv[0], js_fragment_class_id));
+	}
 
 	if (!el2) {
 		//dom_node_unref(el);
diff --git a/src/ecmascript/quickjs/text.c b/src/ecmascript/quickjs/text.c
index 7211ddfee..4e5ed8722 100644
--- a/src/ecmascript/quickjs/text.c
+++ b/src/ecmascript/quickjs/text.c
@@ -1048,14 +1048,18 @@ js_text_appendChild(JSContext *ctx, JSValueConst this_val, int argc, JSValueCons
 	dom_exception exc;
 
 	if (argc != 1) {
-		return JS_NULL;
+		return JS_EXCEPTION;
 	}
 
 	if (!el) {
 		return JS_EXCEPTION;
 	}
 	//dom_node_ref(el);
-	dom_node *el2 = (dom_node *)(js_getopaque_text(argv[0], js_text_class_id));
+	dom_node *el2 = NULL;
+
+	if (!JS_IsNull(argv[0])) {
+		el2 = (dom_node *)(js_getopaque_text(argv[0], js_text_class_id));
+	}
 
 	if (!el2) {
 		//dom_node_unref(el);