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HTML DOM ๋ฉ”์†Œ๋“œ

โœ” HTML DOM ๋ฉ”์„œ๋“œ๋Š” HTML ์š”์†Œ์—์„œ ์ˆ˜ํ–‰ ํ•  ์ˆ˜ ์žˆ๋Š” ์ž‘์—… ์ž…๋‹ˆ๋‹ค. โœ” HTML DOM ์†์„ฑ์€ ์„ค์ •ํ•˜๊ฑฐ๋‚˜ ๋ณ€๊ฒฝํ•  ์ˆ˜ ์žˆ๋Š” ๊ฐ’ (HTML ์š”์†Œ์˜)์ž…๋‹ˆ๋‹ค. โœ” DOM ํ”„๋กœ๊ทธ๋ž˜๋ฐ ์ธํ„ฐํŽ˜์ด์Šค - HTML DOM์€ JavaScript (๋ฐ ๊ธฐํƒ€ ํ”„๋กœ๊ทธ๋ž˜๋ฐ ์–ธ์–ด)๋กœ ์•ก์„ธ์Šค ํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. - DOM์—์„œ ๋ชจ๋“  HTML ์š”์†Œ๋Š” ๊ฐ์ฒด ๋กœ ์ •์˜๋ฉ๋‹ˆ๋‹ค. - ํ”„๋กœ๊ทธ๋ž˜๋ฐ ์ธํ„ฐํŽ˜์ด์Šค๋Š” ๊ฐ ๊ฐœ์ฒด์˜ ์†์„ฑ ๋ฐ ๋ฉ”์„œ๋“œ์ž…๋‹ˆ๋‹ค. - ๋ฉ”์„œ๋“œ( method )๋Š” ๋‹น์‹ ์ด (์ถ”๊ฐ€ ๋˜๋Š” HTML ์š”์†Œ๋ฅผ ์‚ญ์ œ ๋“ฑ) ํ•  ์ˆ˜์žˆ๋Š” ์ž‘์—…์ž…๋‹ˆ๋‹ค. - ์†์„ฑ( property )์€ ๋‹น์‹ ์ด (HTML ์š”์†Œ์˜ ๋‚ด์šฉ์„ ๋ณ€๊ฒฝํ•˜๋Š” ๋“ฑ) ๊ฐ€์ ธ ์˜ค๊ฑฐ๋‚˜ ์„ค์ •ํ•  ์ˆ˜์žˆ๋Š” ๊ฐ’์ž…๋‹ˆ๋‹ค. // id๋กœ ์ ‘๊ทผ์‹œ document.getElementById("id") // name..

BOM - Window

โœ” BOM ( The Browser Object Model ) BOM์€ JavaScript๊ฐ€ ๋ธŒ๋ผ์šฐ์ €์™€ "๋Œ€ํ™”"ํ•  ์ˆ˜ ์žˆ๋„๋กํ•ฉ๋‹ˆ๋‹ค. โœ” window Object window๊ฐ์ฒด๋Š” ๋ชจ๋“  ๋ธŒ๋ผ์šฐ์ €์—์„œ ์ง€์›๋˜๋ฉฐ ๋ธŒ๋ผ์šฐ์ €์—์„œ ์—ด๋ฆฐ ์ฐฝ์„ ๋‚˜ํƒ€๋ƒ…๋‹ˆ๋‹ค. ๋ชจ๋“  ์ „์—ญ JavaScript ๊ฐœ์ฒด, ํ•จ์ˆ˜ ๋ฐ ๋ณ€์ˆ˜๋Š” ์ž๋™์œผ๋กœ window๊ฐ์ฒด์˜ ๊ตฌ์„ฑ์›์ด ๋ฉ๋‹ˆ๋‹ค. window๊ฐ์ฒด์˜ ๋ฉ”์„œ๋“œ๋Š” ์ „์—ญ ํ•จ์ˆ˜ ์ž…๋‹ˆ๋‹ค. window๊ฐ์ฒด์˜ ์†์„ฑ์€ ์ „์—ญ ๋ณ€์ˆ˜ ์ž…๋‹ˆ๋‹ค. HTML DOM์˜ document๊ฐ์ฒด์กฐ์ฐจ๋„ window๊ฐ์ฒด์˜ ์†์„ฑ์ž…๋‹ˆ๋‹ค. ๋”ฐ๋ผ์„œ window๋ฅผ ์ƒ๋žตํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค window.document.getElementById("header"); ์™€ document.getElementById("header"); ๋Š” ๊ฐ™๋‹ค ์ถœ์ฒ˜ : http..

[Eclipse] IndentGuide ํ”Œ๋Ÿฌ๊ทธ์ธ

1. Help > Install New Software... ํด๋ฆญ 2. Add... ํด๋ฆญ 3. Name, Location์„ ์ž‘์„ฑํ›„ Add ํด๋ฆญ Name : ํ”Œ๋Ÿฌ๊ทธ์ธ ๋ณ„์นญ์„ ์ž‘์„ฑ ( ์•„๋ฌด๋ ‡๊ฒŒ๋‚˜ ์ž…๋ ฅํ•ด๋„ ์ƒ๊ด€์—†์Œ ) Location : http://kiritsuku.github.io/IndentGuide/update/ 4. ์ฒดํฌ๋ฐ•์Šค๋ฅผ ์„ ํƒํ›„ Nextํด๋ฆญ 5. Finishํด๋ฆญ 6. Install anywayํด๋ฆญ 7. Restart Nowํด๋ฆญ 8. ์ดํด๋ฆฝ์Šค ์žฌ์‹œ์ž‘ํ›„ ์ ์šฉ์™„๋ฃŒ 9. IndentGuide ์„ธ๋ถ€ ์„ค์ •ํ•˜๊ธฐ Window > Preferences > General > Editors > Text Editors > Indent Guide โœ” ํ”Œ๋Ÿฌ๊ทธ์ธ ์„ค์น˜ํ•ด๋„ ์ ์šฉ๋˜์ง€ ์•Š๋Š” ๊ฒฝ์šฐ -์•„๋ž˜ ์ฒจ๋ถ€๋œ ํŒŒ์ผ( jp.so..

Dev_Tool/Eclipse 2021.03.03

[Eclipse] UTF-8 ์„ค์ •

โœ” ์ด๋ฏธ ๋‹ค๋ฅธ ์ธ์ฝ”๋”ฉ ๋ฐฉ์‹์œผ๋กœ ์ƒ์„ฑ๋œ ํ”„๋กœ์ ํŠธ or ํŒŒ์ผ์˜ ๊ฒฝ์šฐ ์ธ์ฝ”๋”ฉ์„ ๋ณ€๊ฒฝํ•˜๋ฉด ํ•œ๊ธ€์ด ๊นจ์ง€๋ฏ€๋กœ ์ฃผ์˜ 1. Window > Preferences > General > Content Types Java Class File ์„ ํƒ > Default encoding์„ UTF-8๋กœ ์ž‘์„ฑ > Update ํด๋ฆญ 2. Window > Preferences > General > Content Types Text ์„ ํƒ > Default encoding์„ UTF-8๋กœ ์ž‘์„ฑ > Update ํด๋ฆญ 3. Window > Preferences > General > Workspace Text file encoding > Other์„ ํƒํ›„ UTF-8์ž‘์„ฑ > Apply ํด๋ฆญ 4. Window > Preferences > General ..

Dev_Tool/Eclipse 2021.03.03

[DB] SQL ๊ตฌ๋ฌธ์˜ ์ข…๋ฅ˜

1. DDL( Data Definition Language ) -๋ฐ์ดํ„ฐ๋ฒ ์ด์Šค๋‚˜ ํ…Œ์ด๋ธ” ๋“ฑ์„ ์ƒ์„ฑ, ๋ณ€๊ฒฝ, ์‚ญ์ œ -CREATE, ALTER, RENAME, TRUNCATE, DROP 2. DML( Data Manipulation Language ) -๋ฐ์ดํ„ฐ๋ฒ ์ด์Šค์— ์ €์žฅ๋œ ๋ฐ์ดํ„ฐ๋ฅผ ์ฒ˜๋ฆฌํ•˜๊ฑฐ๋‚˜ ์กฐํšŒ, ๊ฒ€์ƒ‰ -SELECT, INSERT, UPDATE, DELETE 3. DCL( Data Control Language ) -ํŠน์ • ์‚ฌ์šฉ์ž์—๊ฒŒ ๊ถŒํ•œ์„ ๋ถ€์—ฌํ•˜๊ฑฐ๋‚˜ ์ œ๊ฑฐ -GRANT, REVOKE 4. TCL( Transaction Control Language ) -DML์— ์˜ํ•ด ๋ณ€๊ฒฝ๋œ ๋‚ด์šฉ์„ ๊ด€๋ฆฌ -COMMIT, ROLLBACK

DB_Study/DataBase 2021.03.03

[DB] Relational Database ( ๊ด€๊ณ„ํ˜• ๋ฐ์ดํ„ฐ๋ฒ ์ด์Šค )

โœ” RDB ( Relational Database ) -๊ด€๊ณ„ํ˜• ๋ฐ์ดํ„ฐ๋ฒ ์ด์Šค๋Š” ํ…Œ์ด๋ธ”๋กœ ์ด๋ฃจ์–ด์ ธ์žˆ์œผ๋ฉฐ ํ…Œ์ด๋ธ”์€ ํ‚ค(key)์™€ ๊ฐ’(value)์˜ ๊ด€๊ณ„๋ฅผ ๋‚˜ํƒ€๋ƒ„ -๋ฐ์ดํ„ฐ์˜ ์ข…์†์„ฑ์„ ๊ด€๊ณ„๋กœ ๋‚˜ํƒ€๋‚ธ๊ฒƒ์ด ํŠน์ง• -๊ฐ€์žฅ ๋งŽ์ด ์‚ฌ์šฉ๋˜๊ณ ์žˆ๋Š” ๋ฐ์ดํ„ฐ๋ฒ ์ด์Šค์˜ ํ•œ ์ข…๋ฅ˜ โœ” RDBMS ( Relational Database Management System ) -RDB๋ฅผ ๊ด€๋ฆฌํ•  ์ˆ˜ ์žˆ๋Š” ์†Œํ”„ํŠธ์›จ์–ด

DB_Study/DataBase 2021.03.03

[Java] java.lang.StringIndexOutOfBoundsException: String index out of range

java.lang.StringIndexOutOfBoundsException: String index out of range : 6 โœ” Solution String์˜ ์ธ๋ฑ์Šค์— ์ ‘๊ทผํ•˜๋Š”๊ณณ์„ ์ฒดํฌํ•œ๋‹ค ์˜ˆ) // testStr์˜ length๋Š” 5์ด๋ฉฐ ์ธ๋ฑ์Šค์˜ ๋ฒ”์œ„๋Š” 0~4๋‹ค String testStr = "ABCDE"; // testStr.substring(0, 6)์€ 0~5๋ฒˆ์งธ ์ธ๋ฑ์Šค๋ฅผ ์ ‘๊ทผํ•˜๊ธฐ๋•Œ๋ฌธ์— // ์ธ๋ฑ์Šค ์œ ํšจ๋ฒ”์œ„๋ฅผ ๋ฒ—์–ด๋‚˜ ์—๋Ÿฌ ๋ฐœ์ƒ String subStr = testStr.substring(0, 6);

Dev_Log 2021.03.02
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