1st_Seminal Level1

Related to: #1

1st_Seminar/interface.ts

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+interface ServerPart {
+    name: string;
+    age: number;
+    group: string;
+    mbti: string[];
+}
+
+const serverPart: ServerPart = {
+    name: '김소령',
+    age: 5,
+    group: 'YB',    
+    mbti: ['ENFJ', 'ANGEL']
+}
+
+const serverMembers: ServerPart[] = [
+    {
+        name: '김소령',
+        age: 5,
+        group: 'YB',    
+        mbti: ['ENFJ', 'ANGEL']
+    },
+    {
+        name: '김소령',
+        age: 5,
+        group: 'YB',    
+        mbti: ['ENFJ', 'ANGEL']
+    }
+];
+
+console.log(serverMembers);
+
+interface Closet {
+    name: string;
+    shirt: number;
+    pants: number;
+    hat?: number;
+    sunglassess?: number;
+}
+
+const closet: Closet[] = [
+    {
+        name: '이승헌',
+        shirt: 10,
+        pants: 10,
+        hat: 4,
+        sunglassess: 3
+    }
+]

1st_Seminar/object.js

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+const sopt = {
+  season: 30,
+  group: ["YB", "OB"],
+  part: ["서버", "기획", "디자인", "안드로이드", "웹", "iOS"],
+  president: "김규민",
+  introduce: function () {
+    this.part.map((name) => {
+      console.log(`솝트 내 파트는 ${name} 파트가 있어요`);
+    });
+  },
+};
+
+console.log(sopt.group);
+sopt.introduce();
+
+console.log(sopt.season);
+
+let array = [1, true, "string"];
+console.log(array);
+
+let array2 = [
+  {
+    name: "김소령",
+    age: 5,
+  },
+  {
+    name: "박정무",
+    age: 15,
+  },
+];
+
+console.log(array2);
+console.log(typeof array2);
+
+// function menu(dinner) {
+//   return `오늘 메뉴는 ${dinner} 입니다.`;
+// }
+
+// const srt2 = menu("삼겹살");
+// console.log(srt2);
+
+// 함수 표현식
+const menu = (dinner) => {
+  return `오늘 메뉴는 ${dinner}입니다.`;
+};
+
+const str2 = menu("곱창");
+console.log(str2);
+
+const func = (num) => {
+  return num * num;
+};
+
+const multiple = (func, num) => {
+  console.log(func(num));
+};
+
+multiple(func, 3);
+
+let a = 2;
+let x = 2;
+// let b = a++; 2
+// let b = ++a; 3
+// console.log(b);
+
+let c = 2 + 3;
+let d = 2 * 3;
+let e = 3 - 2;
+let f = 4 / 2;
+
+console.log(c, d, e, f);
+
+// 비교 연산자 == (값) || === (값, 타입)
+if (a === x) {
+  console.log("a === x");
+}
+
+let y = "2";
+
+if (a === y) {
+  console.log("a === y");
+}
+
+if (a == y) {
+  console.log("a == y");
+}
+
+if (d % f == 0) {
+  console.log("나머지 0");
+}
+
+// AND, OR
+if (a === 2 && d === 6) {
+  console.log("hi");
+}
+
+if (a === 4 || d === 6) {
+  console.log("a가 4 또는 d가 6");
+}
+
+console.log(typeof a);
+if (typeof a == "number") {
+  console.log(a);
+}

1st_Seminar/type.js

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+const name = "장서현";
+console.log(typeof name);
+
+let age = 18;
+console.log(typeof age);
+
+let server = true;
+console.log(typeof server);
+
+// 안녕하세요 제 이름은 장서현입니다. 제 나이는 18살입니다
+console.log(
+  "안녕하세요 제 이름은 " + name + "입니다. 제 나이는 " + age + "살 입니다."
+);
+console.log(`안녕하세요 제 이름은 ${name}입니다. 제 나이는 ${age}살 입니다.`);
+
+console.log(typeof null);
+console.log(typeof undefined);
+
+let arr = ["안녕", 1, "나는", true];
+
+let num = [1, 2, 3, 4];
+const newNumArr = num.map((x) => x * 2);
+
+console.log(newNumArr);
+
+newNumArr.map((x) => {
+  console.log(x);
+});
+
+for (const x of newNumArr) {
+  console.log(x);
+}

1st_Seminar/type.ts

@@ -0,0 +1,49 @@
+let name1: string = '이승헌';
+console.log(name1);
+
+let grade: number = 4;
+
+let isDeleted: boolean = false;
+
+const sum = (x: number, y: number): number => {
+    return x * y;
+}
+
+// const ages: number[] = [1, 2, ,3 ,4, 5];
+// const ages2: Array<number> = [1, 2, 3, 4];
+
+const strArray: string[] = ["hi", "hello"];
+const strArray2: Array<string> = ["hi", "hello"];
+
+const f1 = (obj: object): void => {
+    console.log(obj);
+}
+
+const f2 = (obj: Object): void => {
+    console.log(obj);
+}
+
+f2([1, 2, 3, 4]);
+f2("hihi");
+
+const div = (x: number, y: number): number => {
+    return x /y;
+}
+
+let p: null = null;
+
+// let x: null = 2;
+
+let b: undefined = undefined;
+
+// let y: undefined = null;
+
+// angle-bracket 타입 선언
+let name3: any = '이승헌' // any 아무 타입이나 가능
+let name3Length: number = (<string>name3).length;
+
+// as
+let name4: any = '서버';
+let name4Length: number = (name4 as string).length;
+
+console.log(name4Length);

1st_Seminar/variable.js

@@ -0,0 +1,43 @@
+var name = "채정아";
+var name = "이승헌";
+
+console.log(name);
+
+let name2 = "박진수";
+// let name2 = "김희빈"; 에러발생
+
+console.log(name2);
+
+let name3 = "이동현";
+name3 = "주효식";
+
+console.log(name3);
+
+const name4 = "김루희";
+// name4 = "박진형"; 에러발생
+
+console.log(name4);
+
+if (true) {
+  var x = "var variable";
+}
+
+console.log(x);
+
+if (true) {
+  const y = "const variable";
+}
+
+// console.log(y); 에러발생
+
+function foo() {
+  if (true) {
+    var name5 = "채정아";
+    console.log("if - block -", name5);
+  }
+
+  console.log("function - block -", name5);
+}
+
+foo();
+console.log("global - ", name5);