用於動態更改圖像的Javascript代碼可在IE，FF，Chrome等中正常運行：(
[英]Javascript code to dynamically change image works in IE not FF, Chrome etc :(
問題描述
通常，我聽說有關代碼在IE之外的情況下工作的情況，但我遇到了相反的問題。
這是鏈接：
http://www.underagedriving.co.uk/ins/timeclick2.php
並且該代碼的快照不會在IE下引發任何錯誤，但不會與其他任何代碼（Opera，iPhone Safari，Chrome，FF）打交道
我知道它會有些愚蠢，但是整天都在工作（我不是一個合適的編碼人員），當時它並沒有打球，我的眼睛有點發呆。
任何幫助表示贊賞，以正確的方向指出我:)
謝謝，瑞克
<html>
<head>
<script type="text/javascript">
var arr = new Array(); // Create our array
var convexisting = " "; // Create a blank variable we check later
if (!Array.prototype.indexOf) // IE8 and below
{
Array.prototype.indexOf = function(elt /*, from*/)
{
var len = this.length >>> 0;
var from = Number(arguments[1]) || 0;
from = (from < 0)
? Math.ceil(from)
: Math.floor(from);
if (from < 0)
from += len;
for (; from < len; from++)
{
if (from in this &&
this[from] === elt)
return from;
}
return -1;
};
}
function toggleimg(itemname)
{
if (document.getElementById(itemname).src == 'http://www.underagedriving.co.uk/ins/yellow.gif') // If its yellow that means its not set
{
document.getElementById(itemname).src = 'http://www.underagedriving.co.uk/ins/blue.gif'; // Change colour to blue
arr.push(itemname); // Add item to array
}
else
{
document.getElementById(itemname).src = 'http://www.underagedriving.co.uk/ins/yellow.gif'; // If its already blue, deselect it by turning yellow
arr.splice(arr.indexOf(itemname), 1); // Remove it from array
}
}
function checkform(form) // On submit fix the array to send to PHP
{
form.availabilityarray.value = arr.join(","); // Concat our array data in a CSV string to submit via the form
return true ; // Allow submitting of the form data
}
function preprocess() // Has to be a function after body load
{
// If array ready to be processed
if (convexisting != " ") // Check our test var is not blank
{
var arr = convexisting.split(","); // Split our CSV data for the grid back into an array
for (var i = 0; i < arr.length; i++) toggleimg(arr[i]); // For each entry in array run toggleimg
}
}
</script>
<body onload="javascript:preprocess();">
<form name="claimform" method="POST" action="http://www.underagedriving.co.uk/ins/timeclick2.php" enctype="multipart/form-data" onsubmit="return checkform(this);">
<table width="700" cellspacing=0 cellpadding=0 border=0>
<tr>
<td width="200"> </td><td width="500"><img src='hours.gif' border=0></td>
</tr>
<tr><td align='right'> Fri 07/10/2011 </td><td><a href="javascript:void(0)" onclick="javascript:toggleimg('20111007row05col00');"><img src='yellow.gif' name='20111007row05col00' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111007row05col01');"><img src='yellow.gif' name='20111007row05col01' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111007row05col02');"><img src='yellow.gif' name='20111007row05col02' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111007row05col03');"><img src='yellow.gif' name='20111007row05col03' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111007row05col04');"><img src='yellow.gif' name='20111007row05col04' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111007row05col05');"><img src='yellow.gif' name='20111007row05col05' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111007row05col06');"><img src='yellow.gif' name='20111007row05col06' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111007row05col07');"><img src='yellow.gif' name='20111007row05col07' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111007row05col08');"><img src='yellow.gif' name='20111007row05col08' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111007row05col09');"><img src='yellow.gif' name='20111007row05col09' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111007row05col10');"><img src='yellow.gif' name='20111007row05col10' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111007row05col11');"><img src='yellow.gif' name='20111007row05col11' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111007row05col12');"><img src='yellow.gif' name='20111007row05col12' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111007row05col13');"><img src='yellow.gif' name='20111007row05col13' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111007row05col14');"><img src='yellow.gif' name='20111007row05col14' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111007row05col15');"><img src='yellow.gif' name='20111007row05col15' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111007row05col16');"><img src='yellow.gif' name='20111007row05col16' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111007row05col17');"><img src='yellow.gif' name='20111007row05col17' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111007row05col18');"><img src='yellow.gif' name='20111007row05col18' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111007row05col19');"><img src='yellow.gif' name='20111007row05col19' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111007row05col20');"><img src='yellow.gif' name='20111007row05col20' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111007row05col21');"><img src='yellow.gif' name='20111007row05col21' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111007row05col22');"><img src='yellow.gif' name='20111007row05col22' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111007row05col23');"><img src='yellow.gif' name='20111007row05col23' border=0></a></td></tr>
<tr><td align='right'> Sat 08/10/2011 </td><td><a href="javascript:void(0)" onclick="javascript:toggleimg('20111008row06col00');"><img src='yellow.gif' name='20111008row06col00' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111008row06col01');"><img src='yellow.gif' name='20111008row06col01' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111008row06col02');"><img src='yellow.gif' name='20111008row06col02' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111008row06col03');"><img src='yellow.gif' name='20111008row06col03' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111008row06col04');"><img src='yellow.gif' name='20111008row06col04' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111008row06col05');"><img src='yellow.gif' name='20111008row06col05' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111008row06col06');"><img src='yellow.gif' name='20111008row06col06' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111008row06col07');"><img src='yellow.gif' name='20111008row06col07' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111008row06col08');"><img src='yellow.gif' name='20111008row06col08' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111008row06col09');"><img src='yellow.gif' name='20111008row06col09' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111008row06col10');"><img src='yellow.gif' name='20111008row06col10' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111008row06col11');"><img src='yellow.gif' name='20111008row06col11' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111008row06col12');"><img src='yellow.gif' name='20111008row06col12' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111008row06col13');"><img src='yellow.gif' name='20111008row06col13' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111008row06col14');"><img src='yellow.gif' name='20111008row06col14' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111008row06col15');"><img src='yellow.gif' name='20111008row06col15' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111008row06col16');"><img src='yellow.gif' name='20111008row06col16' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111008row06col17');"><img src='yellow.gif' name='20111008row06col17' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111008row06col18');"><img src='yellow.gif' name='20111008row06col18' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111008row06col19');"><img src='yellow.gif' name='20111008row06col19' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111008row06col20');"><img src='yellow.gif' name='20111008row06col20' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111008row06col21');"><img src='yellow.gif' name='20111008row06col21' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111008row06col22');"><img src='yellow.gif' name='20111008row06col22' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111008row06col23');"><img src='yellow.gif' name='20111008row06col23' border=0></a></td></tr>
<tr><td align='right'> Sun 09/10/2011 </td><td><a href="javascript:void(0)" onclick="javascript:toggleimg('20111009row07col00');"><img src='yellow.gif' name='20111009row07col00' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111009row07col01');"><img src='yellow.gif' name='20111009row07col01' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111009row07col02');"><img src='yellow.gif' name='20111009row07col02' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111009row07col03');"><img src='yellow.gif' name='20111009row07col03' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111009row07col04');"><img src='yellow.gif' name='20111009row07col04' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111009row07col05');"><img src='yellow.gif' name='20111009row07col05' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111009row07col06');"><img src='yellow.gif' name='20111009row07col06' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111009row07col07');"><img src='yellow.gif' name='20111009row07col07' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111009row07col08');"><img src='yellow.gif' name='20111009row07col08' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111009row07col09');"><img src='yellow.gif' name='20111009row07col09' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111009row07col10');"><img src='yellow.gif' name='20111009row07col10' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111009row07col11');"><img src='yellow.gif' name='20111009row07col11' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111009row07col12');"><img src='yellow.gif' name='20111009row07col12' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111009row07col13');"><img src='yellow.gif' name='20111009row07col13' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111009row07col14');"><img src='yellow.gif' name='20111009row07col14' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111009row07col15');"><img src='yellow.gif' name='20111009row07col15' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111009row07col16');"><img src='yellow.gif' name='20111009row07col16' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111009row07col17');"><img src='yellow.gif' name='20111009row07col17' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111009row07col18');"><img src='yellow.gif' name='20111009row07col18' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111009row07col19');"><img src='yellow.gif' name='20111009row07col19' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111009row07col20');"><img src='yellow.gif' name='20111009row07col20' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111009row07col21');"><img src='yellow.gif' name='20111009row07col21' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111009row07col22');"><img src='yellow.gif' name='20111009row07col22' border=0></a><a href="javascript:void(0)" onclick="javascript:toggleimg('20111009row07col23');"><img src='yellow.gif' name='20111009row07col23' border=0></a></td></tr>
<tr><td> <hr </td></tr>
</table>
<input type="hidden" name="availabilityarray" value="">
<input type="submit" value="Submit Hours">
</form>
</body>
</html>
2 個解決方案
解決方案1
5 已采納 2011-09-15 23:18:39
在<img>標記上， name=屬性毫無意義。 如果您真正想要的是一個ID，請顯式設置id= 。
您可能需要熟悉jQuery JS庫。 它使許多這樣的任務變得更加容易。
解決方案2
1 2011-09-16 00:32:25
您的問題是您使用的是name屬性的值，但將其與對id屬性起作用的getElementById一起使用。 由於每個名稱屬性值都是唯一的，因此您只需將它們更改為id屬性，代碼就可以工作。 或者，您可以將對getElementById的調用更改為getElementsByName 。
由於getElementsByName返回一個集合，因此，如果采用這種方法，則需要選擇返回的集合的第一個成員，例如：
if (document.getElementsByName(itemname)[0].src ...)
但是要保持健壯，您需要：
var el = document.getElementsByName(itemname)[0];
if (el && el.src == ...) {
...
}
對getElementById的調用應采用類似的方法。
使用getElementById的代碼可在IE（和某些模仿其行為的瀏覽器）中使用，因為它始終混淆名稱和ID屬性，本質上將它們視為同一事物。 它不適用於符合標准的瀏覽器，並且可能無法在IE 9的標准模式下運行。
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