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div 태그의 크기가 벗어납니다. 아래는 코드입니다.자바 스크립트 오류 개체가 필요합니다.
<body>
<div id="marqueeborder" onmouseover="pxptick=0" onmouseout="pxptick=scrollspeed">
<div id="marqueecontent">
<?php
// Original script by Walter Heitman Jr, first published on http://techblog.shanock.com
// List your stocks here, separated by commas, no spaces, in the order you want them displayed:
$stocks = "idt,iye,mill,pwer,spy,f,msft,x,sbux,sne,ge,dow,t";
// Function to copy a stock quote CSV from Yahoo to the local cache. CSV contains symbol, price, and change
function upsfile($stock) { copy("http://finance.yahoo.com/d/quotes.csv?s=$stock&f=sl1c1&e=.csv","stockcache/".$stock.".csv"); }
foreach (explode(",", $stocks) as $stock) {
// Where the stock quote info file should be...
$local_file = "stockcache/".$stock.".csv";
// ...if it exists. If not, download it.
if (!file_exists($local_file)) { upsfile($stock); }
// Else,If it's out-of-date by 15 mins (900 seconds) or more, update it.
elseif (filemtime($local_file) <= (time() - 900)) { upsfile($stock); }
// Open the file, load our values into an array...
$local_file = fopen ("stockcache/".$stock.".csv","r");
$stock_info = fgetcsv ($local_file, 1000, ",");
// ...format, and output them. I made the symbols into links to Yahoo's stock pages.
echo "<span class=\"stockbox\"><a href=\"http://finance.yahoo.com/q?s=".$stock_info[0]."\">".$stock_info[0]."</a> ".sprintf("%.2f",$stock_info[1])." <span style=\"";
// Green prices for up, red for down
if ($stock_info[2]>=0) { echo "color: #009900;\">↑"; }
elseif ($stock_info[2]<0) { echo "color: #ff0000;\">↓"; }
echo sprintf("%.2f",abs($stock_info[2]))."</span></span>\n";
// Done!
fclose($local_file);
}
?>
<span class="stockbox" style="font-size:0.6em">Quotes from <a href="http://finance.yahoo.com/">Yahoo Finance</a></span>
</div>
</div>
</body>
아래는 페이지의 onlaod라고하는 javascript 기능입니다. 스피가 서버에서 위의 코드를 실행, 스피가 같은 자바 스크립트 오류도 라인 (46) 경고에서 "개체 필요"하기
<script type="text/javascript">
// Original script by Walter Heitman Jr, first published on http://techblog.shanock.com
// Set an initial scroll speed. This equates to the number of pixels shifted per tick
var scrollspeed=2;
var pxptick=scrollspeed;
function startmarquee(){
alert("hi");
// Make a shortcut referencing our div with the content we want to scroll
var marqueediv=document.getElementById("marqueecontent");
alert("marqueediv"+marqueediv);
alert("hi"+marqueediv.innerHTML);
// Get the total width of our available scroll area
var marqueewidth=document.getElementById("marqueeborder").offsetWidth;
alert("marqueewidth"+marqueewidth);
// Get the width of the content we want to scroll
var contentwidth=marqueediv.offsetWidth;
alert("contentwidth"+contentwidth);
// Start the ticker at 50 milliseconds per tick, adjust this to suit your preferences
// Be warned, setting this lower has heavy impact on client-side CPU usage. Be gentle.
var lefttime=setInterval("scrollmarquee()",50);
alert("lefttime"+lefttime);
}
function scrollmarquee(){
// Check position of the div, then shift it left by the set amount of pixels.
if (parseInt(marqueediv.style.left)>(contentwidth*(-1)))
marqueediv.style.left=parseInt(marqueediv.style.left)-pxptick+"px";
// If it's at the end, move it back to the right.
else
marqueediv.style.left=parseInt(marqueewidth)+"px";
}
window.onload=startmarquee();
</script>
("marqueediv"+ marqueediv); 해당 경고 후 자바 스크립트 오류가 "marqueedivnull"입니다.
제 질문은 div 태그가 인식되지 않았습니까? 왜? null 객체로만 가져 오도록하려면이 문제를 어떻게 해결할 수 있습니까?
감사합니다.
'window.onload = startmarquee();'이것은 즉시 startmarquee 함수를 호출하고 반환 값을'window.onload'로 설정합니다. 함수 참조를 전달해야합니다. 이것을,'window.onload = startmarquee'하십시오. 또한 경고 대신'console.log'를 사용하는 것이 좋습니다. 그게 당신의 js 프로그래밍 더 도움이 될 것입니다 :) – Jashwant