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start¹öưÀ» ´©¸¥´ÙÀ½¿¡ num01~ 05 ¶ó´Â id¸¦ °¡Áø °´Ã¼¸¦ ´©¸£¸é ±×°´Ã¼°¡ Ŭ¸¯µÌ´Ù´Â°É ȸ鿡¶ç¿ì·Á°íÇϴµ¥
num01~05 ¸¦ ´¸£¸é buttonprocess¶ó´Â À̺¥Æ®°¡ ¹ß»ýÇϴµ¥ À̰ɹ߻ý½ÃŲ num01~05ÀÇ ¿ø¼ÒÀÇ id¸¦ °¡Á®¿Ã·Á°í document.getelementbyid£¨e.target£©À» Ç߰ŵç¿ä.. ±×·±µ¥ ¾Æ¹«·± È¿°ú°¡¾È³ª³×¿ä event property¿¡¼ ¾î¶² °É»ç¿ëÇØ¾ß ¿øÇϴ´ë·Î id¸¦°¡Á®¿Ã¼öÀÕÀ»±î¿ä Âü°í·Î ±×³É e³ÖÀº°Íµµ¾ÈµÊ
ps£© getAttribute£¨"id£© £¨ÇÔ¼ö?¶óÇØ¾ßÇϳª £© À̰Żç¿ëÇÏ´Ï±î µÇ³×¿ä.. À§¿¡¹æ½ÄÀº¿Ö¾ÈµÉ±î¿ä?
//============ html
<html>
<head>
<meta charset="utf-8">
<title>Question 02</title>
<style type = "text/css">
.num{display:inline;}
.num01{}
.num02{}
.num03{}
.num04{}
.num05{}
</style>
<script src="q02.js"></script>
</head>
<body>
<form action="#">
<input id="startbut" type="button" value="starting">
</form>
<div class = "num">
<div id = "num01">a</div>
<div id = "num02">b</div>
<div id = "num03">c</div>
<div id = "num04">d</div>
<div id = "num05">ess</div>
</div>
</body>
</html>
/==============/ javscript
var numbers = new Array£¨£©;
var clicknum = [0,0,0,0,0];
var time1;
var time2;
function start£¨£©{
var button = document.getElementById£¨"startbut"£©;
button.addEventListener£¨"click",st_but,false£©;
var time3 = new Date£¨£©;
time1 = time3.getTime£¨£©;
console.log£¨time1£©;
for£¨var i=0; i<5; ++i£©{
numbers[i]= document.getElementById£¨"num0"+£¨i+1£©£©
}
}
function st_but£¨£©{
var time4 = new Date£¨£©;
time2 = time4.getTime£¨£©;
console.log£¨time2£©;
for£¨var i =0; i <5; ++i£©{
var num= Math.floor£¨1+Math.random£¨£©*5£©;
numbers[i].innerHTML = num;
}
numbers[2].innerHTML = time2-time1
for£¨var i =0; i <5; ++i£©{
numbers[i].addEventListener£¨"click",butprocess,false£©;
}
}
function butprocess£¨e£©{
for£¨var i=0; i<5; ++i£©{
if£¨document.getElementById£¨e.target£© == £¨"num0"+£¨i+1£©£© £©{
clicknum[i] = 1;
numbers[i].innerHTML = "</p>click</p>";
}
}
if£¨clicknum==[1,1,1,1,1]£©{
numbers[4].innerHTML = "</p>all click</p>";
}
}
window.addEventListener£¨"load",start,false£©;
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2018-11-01 [07:45] |

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