If I want to make an app using java script , which app do I use

Answer 1

Go through these all one..
These threads contains more information...
Hoping it helps you...

This code tells you an option to convert html+css+js code to app..
https://code.sololearn.com/WZcEbcTeHPf3/?ref=app

https://www.sololearn.com/Discuss/2120590/?ref=app
https://www.sololearn.com/Discuss/1363105/?ref=app
https://www.sololearn.com/Discuss/823823/?ref=app
https://www.sololearn.com/Discuss/1003098/?ref=app

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Delete unnecessary link in description.. which is not relevant to your question...!

Answer 2

Thanks