There is some problem that I can't find out why the code worked on Safari, but failed on other browsers.
There is the html part
and the main javascript part.
The main problem that I find is:
While executing the function downloadurl(url, function), cannot find the XML tags "Info", and the markers array length is 0 on many browsers. However, it's ok on Safari. The part of javascript code is like:
downloadUrl("http://travel-taoyuan.tycg.gov.tw/content/travel/xmlcontentlist1.aspx", function(doc) {
var xml = xmlParse(doc);
var markers = xml.documentElement.getElementsByTagName("Info");
......
To alert markers, it will return "0".
And actually it should be "174"(Safari's result).
Thanks for answering my question.
hmmm, seems to be a syntax error. Different browsers will use a different syntax, and so it won't execute (or at best, not properly if your lucky).
Try something along the lines of....
<script type="text/javascript">
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.open("GET","http://travel-taoyuan.tycg.gov.tw/content/travel/xmlcontentlist1.aspx",false);
xmlhttp.send();
xmlDoc=xmlhttp.responseXML;
var x=xmlDoc.getElementsByTagName("theMainTagName"); //TODO: this is the main tag ^(see note)
for (i=0;i<x.length;i++)
{
//TODO: code to handle each xml element
//this is the code to get the value from a particular tag: x[i].getElementsByTagName("theTagName")[0].childNodes[0].nodeValue
}
</script>
NOTE: ^the 'main' tag is, for example, in the case of this xml document, the 'main' tag is 'CATALOG'
Hope this helps. Sorry if it's not very clear, been a while since I worked with xml/javascript. Comment if you want further explanation
Related
I am trying to get the xmlhttp.responseText value, but I have no response from the xmlhttp. I was wondering if there is something wrong with my code:
SCRIPT
var xmlhttp;
function show(){
loadXMLDoc("includes/edit.php",function(){
if (xmlhttp.readyState==4 && xmlhttp.status==200){
alert(xmlhttp.responseText);
}
});
}
function loadXMLDoc(url,cfunc){
if (window.XMLHttpRequest){// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=cfunc;
xmlhttp.open("GET",url,true);
xmlhttp.send();
}
HTML
< a href="#" style="text-align: right; font-size: 10px;" onclick="show()">SHOW</a>
EDIT.PHP
print "1";
I don't see anything wrong with your code per se, but there are a lot of interactions that are opaque from this code snippet.
I can offer some troubleshooting tips, however:
Add a console log in your callback function (the one that you are running alert() in). Just "console.log('function is running');" on the first line. Then see if you get that far. I would put one in the opening line of show() as well -- maybe your click event isn't doing what you think it is.
Have your PHP server-side file write something to a log so you can be sure that the request is being received where you think it is.
Open your browser developer console and watch the network panel. You should be able to see the entire XHR transaction there. Is it being sent at all? If so, is it returning the content you expect?
If all this doesn't help, setup a test in jsfiddle and post the link here. We'll be able to help in a lot more detail that way.
Good luck.
Im currently using a simple looped XML script from on w3cschools and it works great:
if (p1p2total == 5)
{
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.open("GET","xml/SearchRequest-12437.xml",false);
xmlhttp.send();
xmlDoc=xmlhttp.responseXML;
var x=xmlDoc.getElementsByTagName("item");
for (i=0;i<x.length;i++)
{
document.write("<tr><td class='c3c1'>");
document.write(x[i].getElementsByTagName("key")[0].childNodes[0].nodeValue);
document.write("</td><td class='c3c2b'>");
document.write(x[i].getElementsByTagName("priority")[0].childNodes[0].nodeValue);
document.write("</td><td class='c3c3b'>");
document.write(x[i].getElementsByTagName("customfields")[0].getElementsByTagName("customfield")
[0].getAttributeNode("id").textContent);
document.write("</td></tr>");
}
}
However on my third node value query, customfields, im trying to obtain the textContent of a node with the following path in my xml:
item -> customfields -> customfield id=10080 -> customfieldvalue
How can I get the textContent value of customfieldvalue? The parent node has to have an attribute of id=10080 because different items have a varying amount of customfield tags that have different childnode ids.
Please help!!!
I only need this to work in FireFox...
---EDIT---
Ok so I figured out that the xpath I will need to use is:
./customfields/customfield[#id='customfield_10080']/customfieldvalues/customfieldvalue/text()
So how can I replace the line
document.write(x[i].getElementsByTagName("customfields")[0].getElementsByTagName("customfield")[0].getAttributeNode("id").textContent);
to pull the textcontents of the Xpath I provided while remaining in the javascript loop? I need this to pull this Xpath for each
As far as I'm concerned you only have to call
document.write(x[i].getElementsByTagName("customfields")[0].getElementsByTagName("customfield").text;
Give it a try. There are several ways of reading and parsing XML from javascript. I wouldn't recommend w3schools for learning. Go to the roots, try MDN for the next time ;)
I hope it helps
I have a div which I want to populate with different html files from my server. Is there a simple way to do this? All I ever find are jquery samples and I don't want to use a library.
I have tried this:
document.getElementById('main').innerHTML = 'menu.html';
But that obviously just loaded text!
Some simple Ajax will do the trick for you. This is untested, but should give you the right idea:
var xmlhttp;
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=function()
{
if (xmlhttp.readyState==4 && xmlhttp.status==200)
{
document.getElementById("main").innerHTML=xmlhttp.responseText;
}
}
xmlhttp.open("GET","menu.html",true);
xmlhttp.send();
Simplest way is to use a library, which the entire point of, they wrote the code for u. right?
Use the jQuery example. It is as good as it gets.
Is there a simple way? No, not without a library. That being said, you can do it on your own if you choose - that might be all that's necessary for you to come crawling back into the arms of jQuery ;)
Resource: XHR on Mozilla Developer Network
I'm new to javascript and trying to open a txt file into var and then inject it to html div...
I tried to use fopen but I didn't succeed.
<script type="text/javascript">
file = fopen(getScriptPath("info.txt"), 0);
file_length = flength(file);
var content = fread(file,file_length);
var div = document.getElementById("myDiv");
//alert(div);
div.innerHTML = "";
div.innerHTML = content;
</script>
Although it says xml request this works perfectly fine for txt files too (server and client side).
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.open("GET","YOUR_FILE.txt",false);
xmlhttp.send();
xmlDoc=xmlhttp.responseText;
JavaScript has none of the functions you are trying to use.
To read files on the server in JavaScript, you can use XMLHttpRequest.
There is no easy way to read files on the client machine.
abandoned question:
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.open("GET","YOUR_FILE.txt",false);
xmlhttp.send();
xmlDoc=xmlhttp.responseText;
by Freek8
For security reasons, Javascript is made so you can not do this. However, a person has made a workaround which may work and posted it here.
Ok, I realize, it only works for files that are publicly accessbile on the server, which I believe is not what you want to do. Still, if you do find a way, it will be a hack like this, but it could also be fixed to not work at any time.
I've run into an issue with a simple javascript code, which is pretty much just a copy of the code here: http://www.w3schools.com/xml/xml_to_html.asp
<html>
<head>
<script type="text/javascript">
function displayMain()
{
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.open("GET","catalog.xml",false);
xmlhttp.send();
xmlDoc=xmlhttp.responseXML;
x=xmlDoc.getElementsByTagName("VAR");
i=0;
variable1=(x[i].getElementsByTagName("VARIABLE")[0].childNodes[0].nodeValue);
name1=(x[i].getElementsByTagName("NAME")[0].childNodes[0].nodeValue);
value1=(x[i].getElementsByTagName("VALUE")[0].childNodes[0].nodeValue);
txt="Variable: " + variable1 + "<br />Name: " + name1 + "<br />Value: "+ value1;
document.getElementById("mainDiv").innerHTML=txt;
}
</script>
</head>
<body onload="displayMain(); setInterval('displayMain()', 1000)">
<div id='mainDiv'></div>
</body>
</html>
All I want to do is change the xml file and thus have the new value updated on the page. So for instance I change the value in the xml file it will reflect in the html page. It works great on Firefox and Chrome, but not on IExplorer. IE just keeps my old value in there, even when I refresh the page. The only way I can get it to update is by deleting the temp. files and history. Does anyone know a way around this? It dosn't seem very practical for a user to have to all that.
GET requests are cached. Set no cache headers on the server.
or
Append a random query string parameter
xmlhttp.open("GET","catalog.xml?qs=" + new Date().getTime(),false);