4-3.자바스크립트 내장객체(Array)
배열 = 하나의 변수에 여러가지 데이터를 저장
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
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<title> new document </title>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<script type="text/javascript">
//<![CDATA[
//배열 = 하나의 변수에 여러가지 데이터를 저장
/*
var arrNum = new Array(10,20,30,30);
console.log(arrNum[1]);
arrNum[4] = 50;
arrNum[5] = 60;
console.log(arrNum.length);
console.log(arrNum[arrNum.length-1]);
arrNum=[10,20,30,40,50,60,70]
console.log(arrNum[5]);
arrNum[5]=1000;
*/
//요일만들기
var today = new Date();
var num = today.getDay();
var yoil=["일요일","월요일","화요일","수요일","목요일","금요일","토요일"];
console.log(yoil[num]);
//요일별로 나오게하기
//document.write(yoil[0]);
//document.write(yoil[1]);
for(var i=0; i<yoil.length; i++){
document.write(yoil[i] + "<br/>");
}
//이달의 전체 일수를 구해보세요.
var totDay = [31,28,31,30,31,30,31,31,30,31,30,31];
var nowMonth = today.getMonth();
document.write(totDay[nowMonth] + "<br/>");
//윤년구하기
var nowYear = today.getFullYear();
var nowYear4 = nowYear%4 == 0 && nowYear%100 != 0 || nowYear%400 == 0;
//console.log(nowYear4);
if(nowYear%4 == 0 && nowYear%100 != 0 || nowYear%400 == 0){
totDay[1]=29;
}
document.write(totDay[nowMonth] + "<br/>");
//이번달 달력 구하기
//]]>
</script>
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<body>
</body>
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