Added BLUR function

pkg/stdlib/html/blur.go

@@ -0,0 +1,32 @@
+package html
+
+import (
+	"context"
+	"github.com/MontFerret/ferret/pkg/drivers"
+	"github.com/MontFerret/ferret/pkg/runtime/values"
+
+	"github.com/MontFerret/ferret/pkg/runtime/core"
+)
+
+// BLUR Calls blur on the element.
+// @param target (HTMLPage | HTMLDocument | HTMLElement) - Target node.
+// @param selector (String, optional) - Optional CSS selector.
+func Blur(ctx context.Context, args ...core.Value) (core.Value, error) {
+	err := core.ValidateArgs(args, 1, 2)
+
+	if err != nil {
+		return values.None, err
+	}
+
+	el, err := drivers.ToElement(args[0])
+
+	if err != nil {
+		return values.None, err
+	}
+
+	if len(args) == 1 {
+		return values.None, el.Blur(ctx)
+	}
+
+	return values.None, el.BlurBySelector(ctx, values.ToString(args[1]))
+}