XMLHTTPRequest + Opera + "If-Modified-Since" Returning 0 Status
Aug 12, 2010
in my javascript code I'm using a synchronous XMLHTTPRequest to periodically fetch a file from a server. Recently I added the "If-Modified-Since" header request (to reduce downloads if nothing is modified). Since adding the "If-Modified-Since" header request the javascript code still works with all browser (IE, FF, GC, AS) besides Opera.
The issue only happens if there is no new file to be downloaded: with the other browser I can see the 304 request status code, while with Opera (opening dragonfly) the request remains indefinitely as "in progress", the request status code returned being 0.
While accessing my web service i am getting XMLHttpRequest status=0 in Crome/Mozilla and in IE getting XMLHttpRequest status=406. What is the solution for it so that i will successfully get responseText from server? I have tried accessing my html code with localhost but its getting same error,while when i run my code in that localhost location through local drive then it's working. why this is happning i didn't get?
I am using getJSON to get results from a different domain and i wantedto get _some_ object back when calling getJSON so that i can insertsome variables into the callback scope.Basically, what i wanted to do was this:
var new_json = $.getJSON(url, function(data) { alert (this.variable_from_caller);
I am wondering how can I return the variable senttext from the function below?I have declared it and when I alert(senttext) below it appears as I want it but I need to return it and pass it to another function. When I change alert() to return the variable becomes undefined?
var senttext; function getData() { if (window.XMLHttpRequest) {
In somename( ) fn i am using AJAX to retrieve the value and whenever i click on that link [old code] it takes me to current page itself without giving any AJAX response, that too only in Mozilla browser.
After that i changed the href attribute value to "javascript:void(0);" and it works well without any error.
So this is the situation i came across. I dont know whether the above info will help you guys?
I'm making a script that requires cross-domain scripting to get the statuscode of other files. I'm currently using a small PHP script to relay the files from the remote server onto mine. If I want to get the files directly using AJAX, it is not allowed for obvious reasons. I don't want the actual files, I only want to get the status code of that file, and it is going to be either a 404 or a 301. I would've assumed that as the AJAX call is never attempted, the statusCode will be 0, and this is what the actual call variable returns.
However, in Firebug it shows the statuscode next to the request (404 or 301), even if, the call has never been made. Why is the statuscode appearing in Firebug but not in the statuscode variable?
I am submitting a form using ajaxSubmit and trying to read back the status code.For a error case it is showing HTTP Status 404 in responseText but not xhr.status is undefined.If i use complete callback then xhr.status 0 So how to handle case when there is some error like 404..[code]
I'm using height() and width() to find the dimensions of some inline images in the html. FF and IE work fine, but Opera is returning incorrect values. For example, it returns 92px as the width of an image that is actually 160px wide. How can I fix this?
Is there a script I can get or a means where after a javascript program has altered the html in the DOM it can be printed out to some text window ? This might help me analyze complex programs to figure out what they did to the html.
I am using this photo shuffler code, located here: [URL] How can that be modified to allow for 2 instances? Basically, it would have 2 sets of arrays. I want to have 2 slide shows on the same page. I've tried modifying it myself for a few hours, and no luck.
The application that I am trying to develop is a web-crawler written in JavaScript. The top module called JSBrowse.html defines two frames: an upper one called toppart, and a lower one called bottompart. Toppart.html in turn defines two frames: one called leftpart and one called rightpart. (I would have atached all 4 modules, but I don't know how to attach more than one module, so I chose rightpart.html.)
Leftpart shows the current www page that you have crawled to.
Rightpart contains a button that takes you to the next page in what will eventually be a pushdown list.
Bottompart scans each page for the presence of keyword, and also shows the dom structure of the document.
In rightpart I use this statement to update the URL of leftpart: parent.frames('leftpart').window.document.URL=document.form1.text1.value;
THE PROBLEM IS: The DOM tree that is displayed is the tree of my original html page (i.e., leftpart). What I want is the DOM tree of the current content.
I own 5 books on JavaScript including "HTML Black Book", "JavaScript: The Complete Reference", and 3 others, and I have not found the answer to my question.
I could sure use a clue, or ideas to solve this problem.
Apparently, ` new Date() ` reads it correctly, though problems can occur if the browser returns only two digits for the year. In particular, time zone, field order and separators may vary. It is also reliant on the server's clock having been correctly set at the time of upload. See the URL below.
I have created a web page loaded from MySQL and PHP.It contains a text field, two list boxes and a hidden field for items moved between the list boxes.When I submit the form it send the text field and the last list box item moved but NOT the hidden text field
Basically, I want a page to load, and then every 5 seconds be able to check a file to see if it has been modified since the last time the page loaded. If it has refresh, if not then wait 5 more seconds. Is this possible using javascript?
I'm searching for a pre-made cookie script or a tutorial on making a simple session cookie. Just a cookie to make sure users are getting most current copies of HTML pages on my site.
Up till now I've just had messages on each page instructing them to refresh to make sure the have the latest version.
I have a site that is built with a frameset. What I would like to do is whenever I update a particular frame that contains the main content (ie. a news.html page), have it change a graphic in the navigation bar (ie. a separate .html document) to a glowing animated gif for 7 days. Since the news page doesn't load as the first page within the frameset, it would show that there was something new posted there.
I have a few JavaScript books around, and I -think- I know roughly what needs to be done, but I'm having trouble conjugating scripts.
I think it could be done by checking the date.lastModified against the current date, and if the abs difference was less than 7 days it would display news-anim.gif, else it would display news.gif - however I am not sure how to get the left navframe.html to read the date modified of news.html
Can anyone suggest any solutions (or know of any scripts out there?) or is this more of an issue that should be dealt with using cookies/something else?
I have found a useful script at [URL] which shows the date a page was last modified. I have put it at [URL] where it works perfectly. But the same script with a PHP file extension as here [URL] only shows the current time. There is no PHP in the page, but somehow the PHP processor seems to be upsetting it.
I use NETSCAPE established a catalog page in XML, which uses Javascript-DOM to add, remove and sort the products by their prices. But which Javascript function should I use in order to save the modified page into local hard disk? to sort products as well.
The original page is visible for a very short moment, before the modifications done with the javascript are visible. This is logic to me, sinceI add my javascriptat the end of the page, as recomended. For the user it is a little confusing. Is there a way that the user sees only the page with the javascript modifications?
I am usingjquery-simplemodal.js plugin for displaying a modal form. My form is a separate .jspf file, being incuded into my main page. Here is my code:
function showPopup(popupContentId) { //wrap the content div with the border and show the dialog with the following params $.modal("<div class='layerBorderOuter'><div class='layerBorderInner'>" + $(popupContentId).html() + "</div></div>", {modal:true, [Code]...
Yesterday I started rewriting the xmlhttprequest functions to an oo equivalent, but as it turns out, I don't get it right:
Code:
function Request() { this.req=init(); this.req.onreadystatechange = this.processedRequest; //addEventHandler/attachEvent alternative //doesn't work either
function init() { try { if(window.XMLHttpRequest) return new XMLHttpRequest(); else return new ActiveXObject("Microsoft.XMLHTTP"); } catch(e) { alert(e); } } }
var x=new Request(); x.send(url); //the processing function //the eventtrigger should activate the callback function //when the xml has been returned
It seems like the problem is that I don't get to my "this.req" in the processedRequest function. Can anyone see where the problem lies, it has been turning me crazy all weekend already.
1. - I am new to this 2. - Using the following .js file:
Code: function makeObject(){ var x; if (window.ActiveXObject) { x = new ActiveXObject("Microsoft.XMLHTTP"); }else if (window.XMLHttpRequest) { x = new XMLHttpRequest(); } [Code]...
When an element contains script tags, and the element gets moved/modified, the script is fired twice. Is there any way to fix this issue without modifying the contents of script tags? We have customers who may add script to their CRM and would be beyond my control. I have included an example of the issue. Note that this can occur in wrapAll, sortable, and anything else which directly modifies the dom.
Test Sample : Copy this into a htm and correct the paths to the js files. You will see that the alert() fires before the 2nd content div is drawn and then again after the div containing the script is moved. Afterwards the script doesn't fire again.
