Some style, fixed JS

static/index.js

@@ -16,4 +16,23 @@ r(() => {
         const resultat = await response.text();
         g('response').innerHTML = resultat;
     });
+
+  const afegirPart = (t) => {
+    const frase = g('frase');
+    let conector = ' de ';
+
+    if (frase.value === '') {
+      conector = 'la ';
+    }
+
+    g('frase').value = g('frase').value + conector + t;
+  }
+
+  g('absencia').addEventListener('click', () => {
+    afegirPart('absencia')
+  });
+
+  g('presencia').addEventListener('click', () => {
+    afegirPart('presencia')
+  });
 })