Double Ajax Calls, Using $F The Second Time Returns Null
Feb 11, 2006
I'm using the $F of the prototype library to send data through the Ajax
Request. I'm having problems using the $F to reference fields sent
back through an original Request. My first request sends a form back
to the user in the type such as <input text name=foo> and at the bottom
of the returned form I have a second ajax call to send the fresh data
to the another script. The problem is that the new data in the form
cannot be referenced from $F. My question is how can I pass the new
data in the javascript to another Ajax call either by $F or by other
means?
I'm trying to retrieve some data trough yahoo pipes, but it always returns null. However if i go to my yahoo pipe's site and i launch it, the pipe works perfectly.[code]
HTML Code:<div class="drag q1 bar" style="top: 10px; left: 0px; position: absolute;">b</div>i assign variables like so:
Code: var style = notationrow[i].childNodes[nodecount].getAttribute("style"); var nodeclass = notationrow[i].childNodes[nodecount].getAttribute("class");
Suppose I have the following inside a function:Code JavaScript:document.getElementById('display_content').innerHTML = "hello";The above works.However, when I define it like the following it says display_content is null on firefox error console.
Code JavaScript: var display_content = document.getElementById('display_content');
This seemed like it should be so simple. It works fine in Firefox, but not in IE. The goal is to disable the form's Submit button, until the question is answered. (The alert is for troubleshooting.)
When using the code below the alert returns a value of null. In the past this has never happened, it has always returned the xml file I'm requesting. I have noticed a strange difference between browsers. This script is used to fill a form automatically. In its current state it works perfectly in opera, but does not work in firefox or IE (used to work in all the browsers). I'm by no means a javascript expert, am I missing something here?
I have a form in which I preset some text inside a readonly, disabled textarea using javascript ('data' being the text): document.getElementById("link_of_current_view2").value = data;
However, once I call my .php script to process the form, the element is null. How do I get it to pass along that data, which is in the textbox when the user views the form? <div id="sendlink" class="contact_form" style="z-index:10;"> <a class="close" onclick="document.sendlink_form.reset();return false">CLOSE</a> <form id='sendlink_form' name='sendlink_form' method="post" action="sendlink.php" > <label for="link_of_current_view2">Link: </label> <textarea id="link_of_current_view2" name="_of_current_view2" class="link_of_current_view" rows="2" disabled="disabled" wrap="soft" size="58" value="" readonly="readonly" value=/>
It's purpose is to check for valid date and allows formats mm/dd/yyyy, m/dd/yyyy, mm/d/yyyy or m/d/yyyy.
When I try it with the code below it always returns null.
Code:
function isValidDate(/* String */ p1_date) { var x = "^(((0?[1-9]|1[012])/(0?[1-9]|1d|2[0-8])|(0?[13456789]|1[012])/(29|30)|(0?[13578]|1[02])/31)/(19|[2-9]d)d{2}|0?2/29/((19|[2-9]d)(0[48]|[2468][048]|[13579][26])|(([2468][048]|[3579][26])00)))$";
I have a following string: var myHTML = "<html><body>testing hope this work in html</body></html>"; alert($(myHTML).children("body").html()); Why does the alert return NULL, instead of "testing hope this work in html" ???
I'm testing a page with a .js hide/show <div> overlay to hide/show a video player. The image of the video screen in the center of the page, when clicked, opens a hidden <div> overlay. It works but it requires the viewer to double click the first time. What needs to change to make it "show" the <div> on the first click? Once the video <div> is displayed, then it works every time with just one click to hide or show. It's just the first time that requires two clicks to get it to work. Here is the page: [URL]
Here is the code used to implement the hide show, in the <head>:
Code: <!-- Elements Needed for Video Player Popup --> <!-- The javascript hide/show --> <script type="text/javascript" language="JavaScript"> <!-- function HideContent(d) { document.getElementById(d).style.display = "none"; } function ShowContent(d) { document.getElementById(d).style.display = "block"; } function ReverseDisplay(d) { if(document.getElementById(d).style.display == "none") { document.getElementById(d).style.display = "block"; } else { document.getElementById(d).style.display = "none"; } } //--> </script> a And on the image, which acts as the button: Code: <a href="javascript:ReverseDisplay('mediaspace2')"> <img src="images/vid_button_image.jpg" width="376" height="282" border="0" /></a>
I am trying to taking this embedded script Code: <SCRIPT LANGUAGE="JavaScript"> <!-- Begin var strDay; if ((now.getDate() == 1) || (now.getDate() != 11) && (now.getDate() % 10 == 1)) // Correction for 11th and 1st/21st/31st strDay = "st "; else if ((now.getDate() == 2) || (now.getDate() != 12) && (now.getDate() % 10 == 2)) // Correction for 12th and 2nd/22nd/32nd strDay = "nd "; else if ((now.getDate() == 3) || (now.getDate() != 13) && (now.getDate() % 10 == 3)) // Correction for 13th and 3rd/23rd/33rd strDay = "rd "; else strDay = "th "; document.write(dayName[now.getDay()] ..... // End --> </script> and turn it into a function called time.
Javascript Source Code: function time() { var strDay; if ((now.getDate() == 1) || (now.getDate() != 11) && (now.getDate() % 10 == 1)) // Correction for 11th and 1st/21st/31st strDay = "st "; else if ((now.getDate() == 2) || (now.getDate() != 12) && (now.getDate() % 10 == 2)) // Correction for 12th and 2nd/22nd/32nd strDay = "nd "; .....
But when I do the out put returns nothing. Why this might be. I initially thought that I had the formattingsyntax wrong for the function it self but this doesn't seem to be. [URL]
within this page that has been created, there is an AJAX tree folder which calls another page to be loaded into a DIV by AJAX again. Code:
[Code]...
I don't know why it doesn't work because the page has been loaded with the JS file, but as soon as the link is added afterwards it doesn't work. I take it this is because it doesn't know where to find the JS, but how can I overcome this?
I have a for loop which has a length of 8. It's meant to run through an array of objects and bind a click function to all of them. So the alert should run a range 0-7 but instead it returns 8 no matter which object is being clicked.
Very intermittently, I am finding ajax requests submitted with jquery are being submitted twice, once with parameters, and once without parameters. The code looks something like this:
I'm trying to use the jqmodal dialog plugin and everything is working OK except for one minor problem. It seems when I click on the link, the expected action does not occur until I click the second time. Essentially I set up a small test form with a single line put into a table. In that data line is an href, which when clicked calls an AJAX function and returns text, which displays as a dialog. Like I said, this works fine except for the fact that the dialog does not show until the second time I click on the link. I added an alert box to the code, so I know the function is executed the first time the link is clicked
Below I have a facebook login/logout script for my website. The login works fine. The AJAX requests the php file, waits for the "Success" response, and then reloads the page. The logout doesn't. Instead the browser goes to the PHP file with just the word "Success" printed on it. I've separated the xml request as a separate function but that doesn't appear to solve it either. code...
Okay, I am in the process of making an Ajax library for jBeta, and have run into a snag. code..
NOTE - I have stripped everything not-necessary for this code out. If you want to have the rest for testing it can b downloaded from the jBeta project thread in the projects forum (everything is the same except for this Ajax stuff, which I am adding).
Now, as you can tell the two calls are the same. The first one returns fairly quickly, but the second one never returns, and I haven't got a clue as to why (it is late, so I may have missed something). What should be happening here, is that you can have 1 Ajax call going at a time (I know the limit is 2, this is just for dev purposes), when you get multiple calls all the subsequent ones should be added to a queue and then the library should get to them in order (seems to work, it calls the call() function 3 times). For some reason the later calls (after the first one) are never made (I am assuming that is the problem, they should return if they are successfully sent, one would think).
I have a search box which uses AJAX to query a database and return a list of suggestions to the user, it works off the "onkeyup" event on the input textbox.
Obviously this creates an AJAX call for every keypress the user makes and I'd like to make this more efficient by adding a short delay before the AJAX call is made.
In my js application, consecutive ajax calls are made while running in a for loop. I am using prototype.js for AJAX calls. now if I don't call any function on onComplete event then everything is ok. but if I do so, then the function I have set in an onComplete event is invoked once or twice. rest of the time it doesn't work. the code is like the follwing:
/** * Moves selected options from source to destination select list. * @param source select list, destination select list * @return none */ function moveMultipleOption(sourceListId, destListId)// single or multiple based on selection {
var sourceListBox = document.getElementById(sourceListId); var destListBox = document.getElementById(destListId);
for(i = sourceListBox.options.length-1; i>=0; i--) { //for() loop is used for finding how many options are selected. if(sourceListBox.options[i].selected) {
} /** * Calls to server through Ajax * @param option value, option text, source table name and destination table name. * @return none */ function AjaxRequest(i,textValue,sourceTableName,destTableName) { var url = '/run.php/SelectList' var pars = 'cmd=singleTransfer' + '&itemValue=' + i + '&textValue=' + textValue + '&sourceTableName=' + sourceTableName + '&destTableName=' + destTableName;
var myAjax = new Ajax.Request( url, { method: 'get', parameters: pars, onComplete: showResponse } ); }
function showResponse(originalRequest) { // CODE IN THIS FUNCTION DOES NOT ALWAYS EXECUTE. }
Now i have solved the problem for the time being by making a single call to ajax for the whole loop. Now my question is : what is causing this problem? Can I give time delays between two consecutive requests?
I'm writing an application with PHP that let me have statitics about visited pages for my web site. to save informations needed i use an ajax query with the unload event. The problem that i have is titme to time the script uses with that ajax query doesn't work especially when i stay long time in a page.
This is my code?
Why it works most of time but sometime doesn t work? is there any specifications to take for the unload event ?
