[1주차] 기본 과제 제출

datatypes.js

@@ -0,0 +1,33 @@
+const sym1 = Symbol();
+const sym2 = Symbol();
+const sym3 = Symbol('foo');
+const sym4 = Symbol('foo');
+
+console.log(sym1 === sym1); 
+
+console.log(sym1 === sym2);
+console.log(sym3 === sym4);
+
+const user = {
+    email : "[email protected]",
+    name : "임채영",
+    favorite : ["초밥", "케이크"],
+    introduce : function() {
+        console.log(`${this.name}입니다. ${this.favorite} 좋아`);
+    },
+    getFavoriteFoods : function() {
+        this.favorite.forEach((food) => {
+            console.log(`${food} 맛있어`);
+        });
+    },
+};
+
+const arr1 = ["Hi", 10, true];
+const arr2 = Array(1, null, "우와!", false, { sopt: "Server" });
+
+arr1.map((item) => console.log("item1 :", item));
+arr2.map((item) => console.log("item2 :", item));
+
+const add = (a, b) => a + b;
+const hello = name => console.log(`${name}, hello!`)
+const info = (name, age) => ({name, age})

eventdriven.js

@@ -0,0 +1,10 @@
+const sayHello = () => console.log("Hello");
+
+const timer = () => {
+    return setTimeout(() => {
+    console.log("End !");
+    }, 3000);
+};
+
+sayHello();
+timer();

scope.js

@@ -0,0 +1,21 @@
+if (true) {
+    var x = "var";
+  }
+  console.log("x: ", x);
+
+  if (true) {
+    let y = "let";
+  }
+  console.log("y: ", y);
+
+//* var가 function scope 를 벗어났을 때!
+function func() {
+    if (true) {
+      var test = "var";
+      console.log("test: ", test);
+    }
+    console.log("test: ", test);
+  }
+
+  func();
+  console.log("test: ", test);

typescript.ts

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+const isLiked: boolean = true;
+console.log(`${typeof isLiked}, ${isLiked}`)
+
+const str: string = 'hellooo!!'
+console.log(`${typeof str}, ${str}`)
+
+let num: number = 31
+console.log(`${typeof num}, ${num}`)
+
+//const sum: number = 'sum number'
+
+let numbers : number[] = [1, 2, 3];
+
+const strings: Array<String> = ['hi', 'hello'];
+
+const objArray1: Object[] = [
+    {item1: 'oh'},
+    {item2: 'wow'}
+]
+
+const objArray2: object[] = [
+    {item1: 'oh'},
+    {item2: 'wow'}
+]
+
+const foo1 = (something: object) : void => {
+    console.log(something)
+}
+
+const foo2 = (something: Object) : void => {
+    console.log(something)
+}
+
+foo1('boom')
+foo2('boom')
+
+const fun = (name: string): void => console.log(`hello, ${name}!`)
+
+const sum1 = (a: number, b: number): number => a + b;
+
+const sum2 = (a: number, b: number): number =>{
+    return a+b;
+}
+
+const a: null = null;
+
+let oops: null = 2;
+
+let b: undefined = undefined;
+
+let c: undefined = null;
+
+let str1: any = "임채영";
+let str1Length: number = (<string>str1).length;
+console.log(`${typeof str1Length}, ${str1Length}`);
+
+let str2: any = "차윤주";
+let str2Length: number = (str2 as string).length;
+console.log(`${typeof str2Length}, ${str2Length}`);
+
+const hmm: any={
+    name: "임채영",
+    age: 21,
+    isSOPT: true,
+};
+
+interface SOPT{
+    name: string;
+    age: number;
+    isSOPT: boolean;
+}
+
+const info : SOPT = {
+    name: "임채영",
+    age: 21,
+    isSOPT: true,
+};
+
+interface SOPT1{
+    name: string;
+    age: number;
+    isSOPT?: boolean;
+}
+
+const info: SOPT1 = {
+    name: "임채영",
+    age: 21,
+}

variables.js

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+var myName = "임채영";
+console.log(`${myName} is wrong name !`);
+
+var myName = "임채영";
+console.log(`My name is ${myName}`);
+
+let part = "Server";
+let part = "Serverrrrr";
+console.log(`Let's go ${part}`);
+
+const school = "SOPT";
+const school = "STOP";
+console.log(`school ${part}`);
+
+//let과 const 지향!!
+//var let은 재할당 가능, const는 불가능