Javascript/test.html at main · ksj2001/Javascript · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
<!DOCTYPE html>
<html lang="kr">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Javascript 연습</title>

</head>
<body>
    <!-- <button type="button"   onclick="changecolor()" >배경색 변경</button>
    <div id="changecolor" width="30px" height="30px">배경색</div>

    <input type="text" id="consoletext">
    <button type="button" onclick="consoleprint()">click</button>

    <script>
       function consoleprint(){
        let element1 = document.querySelector("#consoletext").value;
        console.log(element1)
       }

      function changecolor(){
        var element = document.querySelector("#changecolor");
        element.style.backgroundColor = "gray";
        element.style.color = "white";
      }
    </script>-->

    <script>
      test();
          function test() {
            console.log("Hello");
      }
      test();

      // test2();
      // let test2 = function() {console.log("Bye");}
      // 화살표 함수 작성 방법
      let test2 = () => {console.log("Bye");}
      test2();
      let sum = (a,b) => {return a+b;}
      // console.log(sum(5,2));
      // alert (sum(5,2));

      // greeting(sayHello,"Javascript");
      function sayHello() {return "Hello ";}
      function greeting(helloMessage,name) {
        console.log(helloMessage()+name);
      }
      greeting(sayHello,"Javascript");

      const minus = function (a=1,b=2){ //익명함수
      const num1 = 2;
      const num2 = 1;
      document.write(num1+num2);
      document.write("<br />");
      document.write(a+b);
     };
     minus(5,7);

    </script>


</body>
</html>