Add new JS section

[mdo]

• Consider a third general section for JS
• Include updates for React, Vue, Svelte, etc?

Some general thoughts:

• Let/const over var
• No semicolons
• arrow functions vs “normal” functions?
• variable names camelcase?
• Function names?
• JS linter of choice?
• Async loading

[Shramkoweb]

Hey @mdo, is this still open for contribution? Happy to take it on if so — would propose an outline here first before opening a PR.

[beMySun]

Hello!  Your E-mail has been recieved and I will respond you as soon as possible.Best wishes!