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window 7 64bit Ultimate
eclipse Version: Luna Service Release 2 (4.4.2)
Tomcat 7.0.62 32bit
JDK 1.7.0.75
»ç¿ëÇÏ°í ÀÖ½À´Ï´Ù.
------------Á¦°¡ ÄÚµùÇÑ getTemperature.html ÄÚµå Áß callback() ÀÔ´Ï´Ù------------
function callback(){
if(httpRequest.readyState == 4){
if(httpRequest.status == 200){
var csv = httpRequest.responseText;
var arrCsv = csv.split(",");
alert("arrCsv.length : " + arrCsv.length);
var length = arrCsv.length;
var arrCsv2 = new Array(length);
alert("arrCsv2[ " + i + " ] : " + arrCsv2[i]);
for(var i=0; i
arrCsv2[i] = parseFloat(arrCsv[i]);
alert("arrCsv2[ " + i + " ] : " + arrCsv2[i]);
}
var max = arrCsv2[0];
alert("1 : " + max + " : arrCsv2.lengrh : " + arrCsv2.lengrh);
for(var i=1; i=arrCsv2.length; i++){
if(max
max = arrCsv2[i];
}
alert("2 : " + max);
}
alert("3 : " + max);
document.getElementById("maxTemp").innerHTML =max;
}else{
alert(httpRequest.status);
}
}
};
---------------------------------------------------
¹®Á¦°¡ ¹¹³ÄÇϸé..
(1)
µÎ¹ø° for¹®¿¡¼ ¹«ÇÑ ·çÇÁ°¡ ¹ß»ýÇÏ´Â °ÍÀ» ¹ß°ßÇÏ°í
( " 2 : 10.5 " <-- ÀÌ·¸°Ô Æ˾÷ÀÌ ¹«ÇÑÈ÷ ¶å´Ï´Ù.
max °ªÀÌ 0 ¹ø° °ªÀÎ 10.5 ¿¡¼ ´ÙÀ½ À妽º·Î ³Ñ¾î°¡Áö ¾Ê´Â´Ù´Â °ÍÀ» ¾Ë¾Ò½À´Ï´Ù. )
aler·Î È®ÀÎÇØ º» °á°ú
var arrCsv2 = new Array(length);
¿©±âºÎÅÍ Undified °¡ ³ª¿É´Ï´Ù.
¿ø·¡ ÄÚµå´Â var arrCsv2 = new Array(arrCsv.length); Àε¥ Undified °¡ ³ª¿À±æ·¡
º¯¼ö¿¡ µû·Î ´ã¾Æ¼ ÇغÁµµ ¸¶Âù°¡Áö ÀÔ´Ï´Ù.
new Array() <-- ¿©±â¿¡¼ ( ) ¾È¿¡ Á¤¼ö¸¦ ³ÖÀ¸¸é Á¤¼öÀÇ Å©±â ¸¸ÅÀÇ ¹è¿ÀÌ »ý¼ºµÇ´Â °ÍÀ¸·Î ¾Ë°í ÀÖ½À´Ï´Ù.
Ȥ½Ã ¸ô¶ó¼ °Ë»öÀ¸·Î ã¾ÆºÃ´Âµ¥..¿ª½Ã³ª ±×·¸´õ¶ó±¸¿ä.
ÀÌ Äڵ庸´Ù ÀÂÊ¿¡ arrCsv.length ¸¦ alert ·Î È®ÀÎÇغ» °á°ú 5 ¸¦ Ãâ·ÂÇß½À´Ï´Ù.
Undefind °¡ ¹ß»ýÇÏ´Â ÀÌÀ¯¸¦ ¸ð¸£°Ú½À´Ï´Ù.
arrCsv.length ´Â ºÐ¸íÈ÷ Á¤¼ö °ªÀ̴ϱî¿ä..
¿Ö ÀÌ·¯´ÂÁö ÀÌÇØ°¡ ¾Ê°©´Ï´Ù..
(2)
var arrCsv2 = new Array(length);
ÄÚµå ¹Ø¿¡´Â ¼Û°»ç´Ô ÄÚµå¿Í ´Ù¸£°Ô ÄÚµùÇغýÀ´Ï´Ù.
Àú´Â arrCsv2 º¯¼ö¸¦ Àû±ØÈ°¿ëÇØ ºÃ½À´Ï´Ù.
¼Û°»ç´Ô Äڵ忡´Â var arrCsv2 = new Array(length); ÀÌ ºÎºÐ ¿Ü¿¡´Â
arrCsv2 º¯¼ö°¡ »ç¿ëµÈ ÀûÀÌ ¾ø´Â °Í °°½À´Ï´Ù.
¿Ö var arrCsv2 = new Array(length); ¸¦ ÇϽŠ°ÍÀÎÁö ±Ã±ÝÇÕ´Ï´Ù.
(3)
arrCsv[i] = parseFloat(arrCsv[i]);
ÀÌ ºÎºÐµµ ÀÌÇØ°¡ ¾Ê°©´Ï´Ù..
float À¸·Î ij½ºÆÃÇؼ ÀÚ±â Àڽſ¡°Ô ´Ù½Ã ´ëÀÔÇÏ´Â ÄÚµå¶ó°í »ý°¢µÇ´Âµ¥¿ä..
Àӽ÷ΠÀúÀåÇÒ º¯¼ö°¡ ¾øÀÌ Àú·¸°Ô °¡´ÉÇÑÁö°¡ Àǹ®ÀÔ´Ï´Ù.
javascript ¿¡¼´Â °¡´ÉÇÑ°ÍÀÌÁö.. java ¿¡¼´Â ºÒ°¡´ÉÇÑ ÀÏ °°°Åµç¿ä..;;
±×·¡¼ Àú´Â
arrCsv2[i] = parseFloat(arrCsv[i]);
ÀÌ·¸°Ô Çؼ arrCsv2 ·Î ¹Þ¾Æ¼ ±× ¹Ø¿¡ Äڵ忡¼´Â ÀüºÎ arrCsv2 ¸¦ »ç¿ëÇغýÀ´Ï´Ù.
arrCsv[i] = parseFloat(arrCsv[i]);
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