js代码出现dom exception 8，无解...
在书上访了一段代码，发现在插入节点的时候出现dom exception 8（找不到节点）错误。奇怪的是，原代码却不会出现这种错误...
我的代码，报错出现在最后一个语句：desdiv.appendChild("descriptionp");
function disdes(){
if(request.readyState == 4){
if(request.status == 200){
var desdiv = document.getElementById("description");
for(var i=desdiv.childNodes.length; i>0; i--){
desdiv.removeChild(desdiv.childNodes[i-1]);
}
alert("fuck");
/* var responsedoc = request.responseXML; */
var description = request.responseXML.getElementsByTagName("description")[0];
var descriptiontext = description.firstChild.nodeValue;
var descriptionp = document.createElement("p");
descriptionp.appendChild(
document.createTextNode("Description: " + descriptiontext)
);
desdiv.appendChild("descriptionp");
}
}
}
原书上代码
function displayDetails() {
if (request.readyState == 4) {
if (request.status == 200) {
var detailDiv = document.getElementById("description");
// Remove existing item details (if any)
for (var i=detailDiv.childNodes.length; i>0; i--) {
detailDiv.removeChild(detailDiv.childNodes[i-1]);
}
// Add new item details
var responseDoc = request.responseXML;
var description = responseDoc.getElementsByTagName("description")[0];
var descriptionText = description.firstChild.nodeValue;
var descriptionP = document.createElement("p");
descriptionP.appendChild(
document.createTextNode("Description: " + descriptionText));
detailDiv.appendChild(descriptionP);
var price = responseDoc.getElementsByTagName("price")[0];
var priceText = price.firstChild.nodeValue;
var priceP = document.createElement("p");
priceP.appendChild(
document.createTextNode("Price: $" + priceText));
detailDiv.appendChild(priceP);
var urlP = document.createElement("p");
var list = document.createElement("ul");
var urlElements = responseDoc.getElementsByTagName("url");
for (var i=0; i<urlElements.length; i++) {
var url = urlElements[i].firstChild.nodeValue;
var li = document.createElement("li");
var a = document.createElement("a");
a.setAttribute("href", url);
a.appendChild(document.createTextNode(url));
li.appendChild(a);
list.appendChild(li);
}
urlP.appendChild(list);
detailDiv.appendChild(urlP);
}
}
}
lalal
12 years, 1 month ago
