Try Documentalist, my app that offers fast, offline access to 190+ programmer API docs.

arrays
let foo = []
foo.push("3")
const el = foo.pop()
const exists = foo.contains(3)
Cheatsheets:
Links
es6
Docs:
html element resize detection
libraries
time and date parsing and handling

Feedback about page:

Feedback:
Optional: your email if you want me to get back to you:

Need fast, offline access to 190+ programmer API docs? Try my app Documentalist for Windows