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This article introduces the relevant knowledge of "JavaScript developer Survey report Analysis". Many people will encounter this dilemma in the operation of actual cases, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

1. What kind of JavaScript are you writing?

97.4% of respondents wrote JavaScript for Web browsers, and 37% of them also wrote mobile Web applications. More than 3000 people-- about 56.6% of Murray-- write server-side JavaScript. Of these, 5.5% use JavaScript in some embedded environment, such as Tessel or Raspberry Pi.

Some participants said they used JavaScript in other places, obviously when developing CLI and desktop applications. Several also mentioned Pebble and Apple TV. These are all classified in the Other category, accounting for 2.2% of the vote.

two。 Where do you use JavaScript?

Unsurprisingly, 94.9% of voters use JavaScript at work. However, there is still a large part of the statistics-82.3% Murray-also use JavaScript in part-time projects. Other responses include teaching and learning, because of interest, or for non-profit organizations.

3. How long have you been writing JavaScript?

More than 33% of respondents have written JavaScript code for more than six years. In addition, 5.2% started writing JavaScript,12.4% a year ago, two years ago and 15.1% three years ago. In other words, 32.7% of people only started writing JavaScript in recent years.

4. Which language do you use to compile to JavaScript?

Eighty-five percent replied that they compiled ES6 to ES5. At the same time, 15% still use CoffeeScript,15.2% and TypeScript, and a pitiful 1.1% use Dart.

This is one of the questions that I hope more people can participate in the cooperation, because 13.8% chose the answer of "Other". Of these 13.8%, the vast majority of the answers are ClojureScript,elm,Flow and JSX.

5. Which JavaScript format choice do you prefer?

The vast majority of JavaScript developers who voted seemed to prefer semicolons, at 79.9%. In contrast, 11% said they didn't like to use semicolons. When it comes to commas, 44.9% are in favor of being used after expressions, while 4.9% want to use comma-first syntax. There is also space indentation, 65.5% of people like the space bar, while 29.1% prefer to use tab.

6. Which ES5 feature do you use?

While 79.2% of the respondents agreed with the Array method of the function, 76.3% said they used strict mode,30% using Object.create, while only 28% used getter and setters.

7. Which ES6 feature do you use?

It is worth noting that the arrow function is the most commonly used ES6 feature in this survey: 79.6%. 77.8% of people using Let and const keywords are also very strong, at 74.4%. Unsurprisingly, only 4 per cent of respondents used proxies. Only 13.1% of users said they used symbols, and more than 30% said they used iterators.

8. Do you write tests?

Although 21.7% said they never write any tests, most people have written some tests, and 34.8% often write tests.

9. Do you run continuous integration tests?

The same is true of CI, although more people do not use CI servers-more than 40 per cent. Nearly 60 per cent of respondents used CI at least occasionally, and 32 per cent of them regularly ran tests on CI servers.

10. How do you run the test?

59% prefer to run automated browser tests with PhantomJS or similar, and 51.3% prefer to perform manual tests on web browsers. The server-side automated test got 53.5% of the vote.

11. What unit test library do you use?

It seems that most respondents prefer either Mocha or Jasmine to run the JavaScript test, while Tape got 9.8% of the vote.

twelve。 What code quality tools do you use?

It seems that respondents either chose ESLint or were in the JSHint camp, but JSLint was surprisingly strong after so many years, with nearly 30 per cent.

13. How do you deal with client dependencies?

Npm became the client dependency management system with 60% of the vote. Bower still has 20 per cent, compared with 13.7 per cent for old downloads and inserts.

14. What is your * * build script solution?

The choice of build tools is different, in part because there are so many choices. Gulp***, voted more than 40 per cent. It was followed by npm run with 27.8 per cent, while Grunt received 18.5 per cent approval.

15. What is your JavaScript module loading tool?

At present, it seems that most people are hesitant between Browserify and Webpack, while the latter is nearly seven points ahead of the former. 29% of users said they * used the Babel module, but it can be speculated that they used one of the two tools to package their own module.

16. What library do you use?

This is one of the issues that can benefit a lot from collaborative editing. JQuery is still strong, with more than 50 per cent of the vote. Most JavaScript developers voted for Lodash or underscore, while the xhr microlibrary only voted for 8%.

17. What framework do you use?

Not surprisingly, React and Angular are ahead of the pack. Backbone ranked third, with 22.8%.

18. How often do you use ES6

There are great differences on this issue, with nearly 20 per cent never using ES6, more than 10 per cent using ES6 only, nearly 30 per cent dabbling in it and nearly 40 per cent using it occasionally.

19. Do you know what happens to ES2016?

Roughly speaking, half of the respondents had no idea what would happen to ES2016, while the other half had heard of it.

20. Do you understand ES6?

More than 60 per cent of respondents knew the basics, 10 per cent did not know ES6, and more than 25 per cent thought they knew ES6 quite well.

21. Do you think ES6 has improved?

Nearly 95% of respondents believe that ES6 has improved the language.

twenty-two。 What is your text editor?

There are also differences. More than half of the respondents liked Sublime Text, and more than 30 per cent preferred to use Atom, its open source replica. More than 25 per cent of respondents supported WebStorm and more than 25 per cent supported vi / vim.

23. What is your development operating system?

More than 60 per cent of voters use Mac, while Linux and Windows both have close to 20 per cent of users.

24. How do you find reusable code, libraries, and tools?

Respondents seem to prefer GitHub and search engines, but many also use blogs, Twitter and npm sites.

25. Do you participate in JavaScript social activities?

Nearly 60 per cent had attended at least one meeting, while 74 per cent said they liked to attend parties.

twenty-six。 What browsers does your JavaScript application support?

The answers are varied, but fortunately, most people say they don't deal with customers on IE6 anymore.

twenty-seven。 Do you know the function of JavaScript regularly?

For the JavaScript function of * *, about 80% of the respondents will try and keep the information about *.

twenty-eight。 Where did you learn about the JavaScript function of *?

Unsurprisingly, Mozilla Developer Network of * * is a leader in access to JavaScript documents and news. JavaScript Weekly, which is also a source of news and articles, is popular with nearly 40 per cent of respondents.

twenty-nine。 What features have you heard of?

More than 85% of voters have heard of ServiceWorker, but I wonder how many people have actually used it!

thirty。 Apart from JavaScript, what language do you mainly use?

There are too many words, and I must have missed some, but the result is self-evident.

This is the end of the JavaScript developer Survey report Analysis. Thank you for reading. If you want to know more about the industry, you can follow the website, the editor will output more high-quality practical articles for you!

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