Commit 2557a9f

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code : add comment about callback

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Original file line number	Diff line number	Diff line change
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	`1`	`+/* 2. 프로미스 : Promise */`
	`2`	`+`
	`3`	`+new Promise((resolve, reject) => {`
	`4`	`+ console.log("콜백백님 한판해요") // 1`
	`5`	`+ resolve()`
	`6`	`+})`
	`7`	`+.then(() => {`
	`8`	`+ console.log("NAGA!") // 2`
	`9`	`+})`
	`10`	`+.catch(() => {`
	`11`	`+ console.log("오옹? 나이스!") // 2(에러시)`
	`12`	`+})`
	`13`	`+`
	`14`	`+`
	`15`	`+function f1() {`
	`16`	`+ return new Promise((r1, r2) => {`
	`17`	`+ setTimeout(() => {`
	`18`	`+ console.log("뭐드세요");`
	`19`	`+ r1();`
	`20`	`+ }, 1000);`
	`21`	`+ })`
	`22`	`+}`
	`23`	`+`
	`24`	`+f1()`
	`25`	`+.then(() => f1())`
	`26`	`+.then(() => {`
	`27`	`+ setTimeout(() => {`
	`28`	`+ console.log("뭐 드시냐고 세번째 물어봅니다.")`
	`29`	`+ }, 1000)`
	`30`	`+})`
	`31`	`+`
	`32`	`+`
	`33`	`+function bae() {`
	`34`	`+ return new Promise((resolve, reject) => {`
	`35`	`+ setTimeout(() => {`
	`36`	`+ console.log("배먹어 배!")`
	`37`	`+ setTimeout(() => {`
	`38`	`+ resolve()`
	`39`	`+ }, 1000)`
	`40`	`+ }, 4000)`
	`41`	`+ })`
	`42`	`+}`
	`43`	`+`
	`44`	`+bae().then(() => {`
	`45`	`+ console.log("얘 겨울배가 맛있단다")`
	`46`	`+})`

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