v1.50a example

webui/custom_page.pug

@@ -24,6 +24,11 @@
     button.button.is-primary#plugin-click
       | Send "click" event and refresh
 
+  p#random-number RandomNumber: Click the button below to get a random number
+  p
+    button.button.is-primary#plugin-random
+      | Use emit() to get a random number
+
 //- You can include custom javascripts and send data back to plugin using emit()
     see profile_name.pug for sending data using form
 script(src="static/js/custom_page.js")

webui/js/custom_page.js

@@ -1,5 +1,11 @@
 $('#plugin-click').on('click', () => {
-  emit('click', {}).then(() => {
+  emit('click').then(() => {
     location.reload();
   });
 });
+
+$('#plugin-random').on('click', () => {
+  emit('random').then(result => {
+    $('#random-number').text(result.data.number);
+  });
+});