I want to run index.html but the blank page appears
You must use a local server:
What do you recommend me? Is there a video on youtube that explains it? These things put me off when I start
Installl node.js on your computer:
git clone https://github.com/photonstorm/phaser3-project-template cd phaser3-project-template npm start
A page will open on chrome, and when you modify a file in the src folder, chrome auto reload
The video @samme shared got me to my ideal setup with to develop and build Phaser apps. When I teach programming I usually install Brackets text editor with my students. It easy to use, lightweight and comes with a live preview button out of the box. With one click, your game will be updated as you develop it.
+1 for Brackets. Not only is it great for Phaser, it is great for use for all kinds of JS, HTML, and CSS programming.