Best Practices In Using Javascript In A Pre-AJAX And Pre-jQuery Era?
Jan 25, 2010
I would like to know what are the best practices in using Javascript in ASP.NET in a pre-AJAX and pre-jQuery era. What I meant by pre-era is not the time before AJAX/jQuery was created, but rather the time before it is popularized and widely adopted (by a significantly large number of programmers).i.e. Is it good thing to store the script in a string variable and register it on demand (RegisterClientScriptBlock) or on startup (RegisterStartUpScript)?Although in using Javascript in ASP.NET, its usage in PHP and JSP are also welcome.
When it comes to integrating your site with facebook, is it recommended to save all the user's info from Facebook to your DB, or is it recommended to query in real time all the info you need based on the user's id?
For example the avatar sizes are different on my site than on my facebook, so I may have no choice but to download the fb avatar, but for other things like name, gender, hometown, I was wondering if I need to save that data. Also, if I decide to change extended permissions at a later time, is that going to be an easy task?
which returns <div>here</div><script language=javascript>alert('');</script> The content gets loaded property, but no alert. How would I get a javascript routine to work from an ajax call along with posting the HTML code?
I am wondering if it is possible to create AJAX Toolkit control using JavaScript/JQuery or not. I know that I can create controls at server (at design or code-behind) and interact with its properties using JavaScript but I would rather want to initalize and create controls at client side using JavaScript/JQuery.
In my web application I have a textbox called "Address" which is multiline and have 3 rows and 250 characters.
I am calling a javascript function in which i am calling AJAX to send the data to a webservice for some processing but AJAX is unable to process variable which contains multiline text.
I am reading multiline textbox value like this in javascript function.
[code]....
If I comment paddress parameters in ajax "data:" it works fine other wise ajax goes on "OnError" ...Oh i just figured out that my address has 'B' Area (apostrophe) in it thats why it its giving this problem. So how to parse apostrophe as textbox value and read in javascript variable and write back in database similary.
I created a number of standard WCF Services (Service Contract and Host (svc) are in separate assemblies). I fired up a Web Site in IIS to host the Services (i.e., address is [URL]). Then in my Web Site project I added the reference. I am able to call the services normally. I am needed to call some of the services client side. Not sure if I should be looking at articles calling WCF services through AJAX, JQuery, or JSON enabled WCF Services. Some of the changes I made was adding the following to the Operation Contract:
I am attempting to call the service like this in javascript: wcfservices.SetFoo(string Id); Nothing is working. If it is idea or a better solution to call JSON enable, JQuery, etc.... I am willing to make any changes.
i have a jquery .click() function that executes an .ajax() method call
[Code]....
when the .ajax() method executes succesfully it calls a javascript function
[Code]....
as you can see i have an .ajax() method inside my javascript function, is this possible? I am creating loop that starts on the finish listener of the soundmanager object. So when I need to make the ajax call to get he next url I need.
I've tried a bunch of different examples and still can't get this to work. I have a jQuery GalleryView control I'm using and I simply want to log impressions. I set up a webservice that works, but I can't figure out how to get it to work in javascript. I have verified that the webservice is working as expected.
So I have this idea of creating a asp.net user control, to handle all forms of modal popups (whether it be error handling, forms, dialogs, etc).
I already created this before, placing the user control in the top master page, exposing it to all content pages, so I could do something like:
Master.Popup.ShowException(Exception);
And the usercontrol itself would have the necessary markup to look like a modal dialog, and in the show method just do a .Visible = true.
This is all fine, but I've started thinking of implementing a bit of style with jquery. I'd like for the usercontrol to have some sort of jquery animation on show. But I don't know how to go about achieving this, as I don't know how I would call that jquery function from the codebehind instead of the popup.visible = true.
I am developed an web application in asp.net. In this application I have used jquery ajax for some pages. In this application, when I make two ajax call asynchrounoulsy that would not do as I expceted. what is happening is even the second ajax call finishes i can see the result when the maximum time out ajax call finished. I mean i can see the both results in the same time, not one by one. for an example. I have 3 pages
1) main.aspx - for make two ajax request.
2) totalCount.aspx - to find the total count. (max it takes 7 seconds to return, as corresponding table contains 3 lak records)
3) rowCount.aspx - to find the row details. (max it takes 5 seconds to return result).
due to this scene, I have planed to make asyn call in jquery ajax in asp.net. here is my code...
function getResult() { getTotalCount(); getRows(); } // it takes max 7 seconds to complete // as it take 7 seconds it should display second.( I mean after the rows dispaying) // but displaying both at the same time after the max time consuming ajax call completed. function getTotalCount() { $.ajax({ type : "POST", async : true, url : "totalCount.aspx?data1=" + document.getElementById("data").value, success : function(responseText) { $("#totalCount").attr("value", responseText); } }) } // it takes max 5 seconds to complete. // after finished, this should display first.( i mean before total count displays) // but displaying both at the same time after the max time consuming ajax call completed. function getRows() { $.ajax({ type : "POST", url : "getrows.aspx?data1=" + document.getElementById("data").value, async : true, success : function(responseText) { $("#getRows").attr("value", responseText); } }); }
I would like to know, If there is any possible to make asyn call in jquery ajax in asp.net. I searched in net, I got some points that says we cannot do this in asp.net ref link: [URL] if we can do this in asp.net How to do that?
How can I upload files asynchronously with JQuery?
I have a file upload field, after the image was selected, i make a jquery ajax post to an aspx page's page method. My question is, how can I pass that image via jquery? When I do $(this).val() it only gets the file name. I want to pass the image object itself.
In my web application I have a textbox called "Address" which is multiline and have 3 rows and 250 characters.
I am calling a javascript function in which i am calling AJAX to send the data to a webservice for some processing but AJAX is unable to process variable which contains multiline text.
I am reading multiline textbox value like this in javascript function.
var puid = document.getElementById('<%=userid.ClientID%>').value; var paddress = document.getElementById('<%=xaddress.ClientID%>').value;
If I comment paddress parameters in ajax "data:" it works fine other wise ajax goes on "OnError" ...so how to handle multiline textbox values in javascript.
I have a button that needs to check if a contact exists.I have used the Jquery ajax function to do this and I do successfully gind out if the contact exists or not.However I cannot find a way for the javascript code to wait until the ajax has finished so I can return true/false to the button for it to continue server side function. I.e.
I have this polling script to check if a text file is created on the server. Works great locally, but fails when the file is on a different domain. How would i rewrite this for cross domain support?
EDIT: I ended up using YQL to solve the cross domain issue and although it works, YQL is really slow that's adding quite a bit of performance overhead. Can anyone suggest a better solution for cross domain JQuery calls?
I am developing a huge almost millions of users and very complex logic , secure and optimize web application.but i am thinking to use client side archeticture with asp.net like gmail is using.
function DatalistFunction(argumentid) { set_minimum_points_for_session = value; SetSession(set_minimum_points_for_session); Redeem(argumentid); }
this is my code which i am calling on link button onclientclick event.
sometimes what happens is redeem function gets called first and then setsession function gets called. do i need to put some delay or something between the 2 functions, so that they run everytime in their own order
Its time for another very simple question that I can't find an elegant solution for. Basically, I have an app that is using a jQuery Ajax call. In this call, you have to specify a URL path for the service that you are calling. In this instance, I am needing to call this JavaScript function from multiple files in my application and those files are on differing levels of the folder structure.
Here's the question, how would you elegantly handle this scenario so that you can call the JS function from any location in your app. Here are my constraints:
1) I am running on Asp.Net 4.0. 2) My current environment has a local, Dev, Test, and Prod Environment (hard-coding the URL path will not work).
I am developing a web application for online bidding wher I want the BID button to disable itself, on all clients, whenever someone places a bid. What I need is some javascript to ping the site to check if a bid has been placed on the server, if so, then disable the button. I was suggested to use jQuery for this, use .ajax to query the server for the check. Then use a setTimeout javascript function to keep checking.I am not javascript expert at all so any tips would be greatly appreciated. At lease where to start. Also, will I need to record every single bid in database to achieve above?
I have a webpage containing a link to open modal popup
In that web page i there is a label where i want to get the value from modal popup.
Suppose in modal popup i have text box and button when i worte any thing in that text box and submitting that text by popup button then entered text will be appear on the label of webpage.
I have create a web page having dynamically created text boxes if i select value in dropdown list,text boxes auto generates .but i want to save all text box values in SQL server database after clicking on submit button using ajax/JSON request
I'm trying to save some content whenever a button/hyperlink is clicked using jquery.ajax (Using Asp.net 3.5). The logic is as follows:
Through .bind in jquery I bind my own method(MakeLog) to a button click or hyperlink click. The click events of button/hyperlink contain nothing, I need to use .bind for selective controls.Now we have a button whose click event will fire a method, say MakeLog.Code snippet for MakeLog is as follows:
This works fine in IE but in Firefox this is not sending the data back as expected.I tried to identify the issue and came across the following: http://stackoverflow.com/questions/3522944/jquery-ajax-calls-async-false-vs-async-true .What I understand is that, whenver page is redirecting/reloading due to button click or hyperlink click the async call is not working properly.
