What are some nice micro frameworks in web development regardless of technologies?

I am trying to see the most popular micro frameworks among all technologies. See please list your favourite ones! :D

How is the job market for front-end developers with only JavaScript knowledge?

Are there any real jobs available for front-end JavaScript developers (with knowledge of various frameworks like React, Angular, Polymer etc)? Assume that the developer doesn't know CSS and other front-end aspects and knows just JavaScript.

What's the salary (in USD) of an entry level Software Developer in your country?

Please state the name of your country and the salary of an entry level developer there (doesn't have to be accurate. A close guess will do). I know I could have just searched on Google, but nothing is better than asking such a diverse audience here!

What are some good prototyping tools for designing iOS apps?