我正在使用javascript方法getElementsByTagname(“A”)调用所有的“A”标记并对它们执行一些效果。该方法适用于FF和Opera,但不适用于Chrome和Safari。
当我查看chrome和safari的调试工具时,他们说:
“未捕获的类型错误:无法调用方法”GetElementsByTagname“为空”
为什么会这样?解决方法是什么?请有人给我提个建议好吗?
非常感谢。
代码如下:
function popUpSAPWindow(){
// Find all links in the page and put them into an array.
var linksInOrderLinesTable = document.getElementById("orderLinesTable").getElementsByTagName("a"); // The line doing the error
var linksLen = linksInOrderLinesTable.length;
// If the link text is 'SAP' then modify the attributes
for(var i = 0; i < linksLen; i++){
if(linksInOrderLinesTable[i].innerHTML == "SAP"){
// Store the 'href' value of each SAP link.
var sapHref = linksInOrderLinesTable[i].href;
// Modify the attributes of each SAP link.
linksInOrderLinesTable[i].setAttribute("href", "javascript:return false;");
linksInOrderLinesTable[i].setAttribute("onclick", "sapNewWindow(\'" + sapHref + "\')");
}
}
}
它与此HTML一起工作:
<table id="orderLinesTable" summary="List of orders made by customers that the administrator can pick and deal with">
<tr>
<th>Status</th>
<th>Basket id</th>
<th>Order line id</th>
<th>Product</th>
<th>Company</th>
<th>Catalogue</th>
<th>Date</th>
<th>Details</th>
</tr>
<tr>
<td>Accepted</td>
<td>236569</td>
<td>207</td>
<td>OS Master Map</td>
<td>NHS</td>
<td>Standard</td>
<td>1 Aug 10</td>
<td><a href="/orderLineDetails.html">Normal</a> <a href="/orderLineDetails.html">SAP</a></td>
</tr>
<tr>
<td>New</td>
<td>236987</td>
<td>528</td>
<td>Code-Point</td>
<td>BT</td>
<td>Standard</td>
<td>9 Aug 10</td>
<td><a href="/orderLineDetails.html">Normal</a> <a href="/orderLineDetails.html">SAP</a></td>
</tr>
但当我在其他页面上时,它会给出所提到的错误。