helper function

Author: alexkazik

src/dom/element.rs

@@ -83,6 +83,11 @@ impl<'a> ForEach<'a> for Element<'a> {
 }
 
 impl Element<'_> {
+    #[inline]
+    pub fn has_class(&self, class: &str) -> bool {
+        self.classes.contains_key(class)
+    }
+
     #[inline(always)]
     pub fn to_html(&self) -> String {
         let mut result = String::new();

src/dom/html.rs

@@ -46,6 +46,12 @@ impl<'a> PartialEq<str> for &Attribute<'a> {
     }
 }
 
+impl Borrow<str> for Attribute<'_> {
+    fn borrow(&self) -> &str {
+        self.as_str()
+    }
+}
+
 #[derive(Default, Serialize, PartialEq, Eq, IntoOwned, ToBorrowed, ToOwned)]
 #[serde(transparent)]
 pub struct Text<'a>(pub Cow<'a, str>);