From f6dee72a88cc4e3448d865b30308e4c7a3fbcd06 Mon Sep 17 00:00:00 2001
From: ajitsinghkaler <ajitsinghkaler0@gmail.com>
Date: Fri, 10 Jan 2020 09:21:32 +0530
Subject: [PATCH] docs: add note that when ngOnInit not used (#34619)

In some examples ngOnInit was missing added note to tell when it is missing.

Fixes #34562

PR Close #34619
---
 aio/content/start/index.md | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/aio/content/start/index.md b/aio/content/start/index.md
index 2d8bb3e813..f78e4dcbce 100644
--- a/aio/content/start/index.md
+++ b/aio/content/start/index.md
@@ -311,6 +311,13 @@ To make the "Notify Me" button work, you need to configure two things:
 
 1. In the component class, define a property named `notify` with an `@Output()` decorator and an instance of `EventEmitter()`. This allows the product alert component to emit an event when the value of the notify property changes.
 
+<div class="alert is-helpful">
+
+  When the Angular CLI generates a new component, it includes an empty constructor, the `OnInit` interface, and the `ngOnInit()` method.
+  Since the following example isn't using them, they are omitted here for brevity.
+
+</div>
+
     <code-example path="getting-started/src/app/product-alerts/product-alerts.component.ts" header="src/app/product-alerts/product-alerts.component.ts" region="input-output"></code-example>
 
 1. In the product alert template, `product-alerts.component.html`, update the "Notify Me" button with an event binding to call the `notify.emit()` method.