Getting all videos of a channel using youtube API

Question

I want to get all videos of a single channel that i have its Id. The problem that I am getting only the channel informations. this is the link that I am using:

Answer 1

It is very easy method to get channel videos using your channel API key:
Step 1: You must have an YouTube account.
Step 2: Create your YouTube channel API key
Step 3: Create project console.developers.google.com,

Example : https://www.googleapis.com/youtube/v3/channelspart=snippet&forUsername= 
{username}&key={YOUR_API_KEY}