opensource/develper 開発者養成

opensource/develper 開発者養成、、のため、もあって、ソフトウェアエンジニアになるための第一歩、プログラミング入門的なことをJavaScriptを例に書いてみた。今は英語・・
テキストエディタ（何がいいのだろう？自分はAtomを推したいが[と言いつつ、Emacsユーザー]）とブラウザとがあれば、体験できちゃう、かつ、即戦力として仕事もそこそこあるのがJavaScriptのいいところだろう。

JavaScript first step

Java ? JavaScript ?  no relations at all. Javascript can be called ‘ECMAscript’ but “technically” called JavaScript
ok, we gonna use JavaScript from now
first program(source code)
type this sour code in your editor (Atom, Emacs, vim, .. )

<script>

  console.log('hello world')

  a = 10

  b = 20

  c = a + b

  console.log(c)

</script>

and save as a.html in your “HOM” folder(directory).
open a.html in your browser, I recomend Chrome.

push “Ctrl + Shift + i” or choose (menu) > (tools?) > Developer tools to open “Developer Tools”[Chrome]


you got result already in “console” (bottom of “Developer Tools”)

------------------------------------------------------------

hello world

30

------------------------------------------------------------

Edit source code like this

<script>

  console.log('hello world 2')

  a = 30

  b = 40

  c = a + b

  console.log(c)

</script>

Save sour code.

Back to browser.

Reload browser. usually Ctrl + r or Reload button . If you want refresh all(like clear cash) and reload, Ctrl * Reload button.

new result

------------------------------------------------------------

hello world 2

70

------------------------------------------------------------