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IT Study/Web

[JavaScript] Date() 클래스 예제

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<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
 
<p id="demo"></p>
<br>
 
 
<button onclick="displayDate()">지금 시각?</button>
 
<script type="text/javascript">
function displayDate() {
    document.getElementById("demo").innerHTML = Date();
}
 
setInterval("displayDate()",1000);     //타이머 함수
</script>
 
 
 
<p id="time"></p>
 
<script type="text/javascript">
 
//현재 날짜 값 가져오기
var d = new Date();
 
//파라미터로 각각 값을 set
var d = new Date(2010517 ,6 ,51 ,20 ,0);
                //연도    월     일     시     분      초   밀리세컨
 
//문자열로 set
var d = new Date("October 12, 2018 12:32:34");
 
// document.getElementById("time").innerHTML = d;
 
//요일    //1 = 월요일
document.getElementById("time").innerHTML = d.getDay();
 
//연도
document.getElementById("time").innerHTML = d.getFullYear();
 
//월 --> 0부터 시작
document.getElementById("time").innerHTML = d.getMonth() + 1;
 
//일
document.getElementById("time").innerHTML = d.getDate();
 
//시
document.getElementById("time").innerHTML = d.getHours();
 
//분
document.getElementById("time").innerHTML = d.getMinutes();
 
//초
document.getElementById("time").innerHTML = d.getSeconds();
 
// get set
 
 
 
</script>
 
 
 
</body>
</html>
cs