- Spread Operator
- Event loop
Till last year, jQuery was providing most number of jobs. Now, React has taken that place. First time, some another library has become most popular.
React is most popular front-end framework this year. It is providing more no of jobs in the market. Its free and open source. Read more about react here.
Vue js is second popular frontend framework after react. It is launched in Feb 2014 and got much popularity in 4 years only. Read more about Vue here.
AngularJs was released in October 2010. But then they brought the drastic change in September 2016 and named it angular. It uses TypeScript which makes it more robust. It checks the type at the time of compilation. Read more about angular here.