Large Data Tables
Apr 5, 2007
Here's the situation: I have a simple php file which retrieves data from a
mysql database and displays it in a table. However, the number of records
has gotten so large that retrieving all the data takes a lot of memory and
the browser freezes.
I been googling for a solution and some1 mentioned something called live
scrolling where the data is retrieved only when you scroll up or down.
Since am just an amateur and not familiar with XML, XSL, etc; can any1
recommend some link where i could find some JS script with such a feature?
one that's easy to get started with if possible...
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Aug 17, 2009
I have approximately a 400-500 row table (2 of them) each with 12 columns of formatted content such as currency, percentage, name.
I tried this with [url] but it can't seem to handle that much data.
Does anyone have a good plugin for large data on the page? (and no not interested in paginating it really)
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May 26, 2011
I am pulling data from a database and putting it into a table, i'm using the following statement to add row hightlighting to make it easy to read. Everthing works fine with short tables, but for larger tables the highlighting lags severely, aside from manually adding the mouseover/mouseout directly in the output, is there any way to make this faster?
$("#totalcalldata tr").mouseover(function(){$(this).addClass("rowHilight");}).mouseout(function(){$(this).removeClass("rowHilight");});
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Jul 23, 2005
I've created an XML-RPC server, and would like to somehow bind the XML
server responses to a table for users to view. Here's the catch, that data
changes frequently (every few seconds), so I'm using setInterval to
periodically get updated XML content from the server.
Currently, the setInterval function requests the entire dataset, then
rewrites the entire table. I'm concerned that it's a waste of bandwidth,
and disrupts the user scrolling through the data whenever it rewrites.
Ideally, I'll have the XML-RPC server generate only data changed since the
last request, then somehow update the table with the changes.
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Nov 5, 2007
I have a table I am populating with data from a DB, and have it
sortable on the client side. When the table exceeds around 300 rows,
I start running into problems with rendering and sorting it. I
started out using Prototype to help with the sorting, but it appears
that this results in a lot of calls to _getElementsByXPath, which are
taking up a large percentage of the rendering time. I believe this
call is occurring as the DOM is being parsed.
What is the general/most accepted manner of dealing with large data
sets (I am expecting some to grow into the thousands) in a table so
that it can be sorted client side? I am thinking of building a
javascript (JSON) object containing the data, and sorting based on
this. Anybody have any thoughts on this approach, or any suggestions
for other ways to approach this?
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Oct 29, 2010
I have a coldfusion data component that receives two arguments and runs a stored procedure and returns a large data set. I want to use a textbox with autocomplete its data is that result set. I do not want to convert the result set to an array for performance.
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Jul 6, 2011
I am in the process of creating a site for real estate listings optimized for a mobile environment. One of the features that is desired would be a google map that loads listings as the user drags. One of the catches to this is that very few listings have included latitude and longitude values. Therefore, every time I need to add a listing to the map I first need to geocode it. Now with a few listings this is not really a big deal. However, the end goal would be to show all listings within the current bounds.Which depending on the zoom level could be anywhere from a hand full to several hundred.owever, when I attempt to load say 100 listings to the map it pretty much freezes and is fairly buggy after wards.
That said I was wondering if there is a better way to handle this. Perhaps submitting the listings as places with a CRON and having markers generated automatically? I am just trying to think how I can achieve this in a way which doesn't kill a mobile phone because it seems impossible considering there could be over 5000 listings in bounds of the map area. The only real solution I have is to only show say 30 or so and use pagination for the next 30 and so one within bounds.The ultimate goals is when the map bounds change ALL listings will show up within that bounds. The way I have currently approached this is that when the user stop dragging the map a asynchronous request pulls in ALL listings within bounds as an XML those full addresses are geocoded and added to the map. However, this is wrecking havok on the browser and I am not even going to try it in a mobile environment considering its dragging a desk top down. I'm thinking this is less and practical and pagination has to be used but perhaps someone out there has dealt with a similar objective.
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Apr 22, 2010
I have a table within a table, that is to say the table is embedded in a <tr> tag in another table and would like to extract row and cell data to make an ajax call. The table in question has several input fields and a submit button on each row. While I can find the table where the submit came from and can get the data from the <td> elements which contain data i.e.<? echo AsOfDate; ?>, I can't find the correct syntax to retrieve the data from the input fields in that same row. Can someone give me the correct syntax to retrieve the input data?
var AssetTbl = document.getElementsByTagName('table');
for (i =0; i< AssetTbl.length; i++)
{
if (AssetTbl[i].id == "tblAssetHx")
{
RowID =AssetTbl[i].rows[1].cells[0].childNodes[0].data;
if (RowID == ID)
[Code]...
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Jun 21, 2010
Say that you have a table with id Testresults. Now you also would like to show diffrent parts of that table inside diffrent divs that also contain a table.
for example
Code:
<div id="OK testcases">
<table id="oktestdiv">
<tr id="row1" class="ok"><td>ok</td></tr>
</table>
[Code]....
I naturally don't want to write the code for the table at multiple places of the page. Notice also that my site only contains of one site, containing many divs.
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Apr 8, 2011
I'm new to JavaScript and intermediate with coding. After watching several videos on JavaScript I'm trying to document.write into a table data cell. I'm stuck on how to do this.I know how to retrieve data from such, but can't figure out how to write to the tables data cells.
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Dec 5, 2010
I was looking for JQuery Grid which will help me more than 1000 - 2000 records. I mainly need search and paging .
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Oct 11, 2010
I am using Ajax to send a large text box to a server script, however, when the textbox has a lot of data it fails. Is there a better way for me to do this? Here is my code.
Code:
<script type="text/javascript">
function testmail()
{
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
[Code]...
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Dec 13, 2011
I've been using localStorage to store a large amount of data (> 5mb). I know that most browsers limit localStorage to 5mb. However, on the specification site it states,
Quote:
User agents may prompt the user when quotas are reached, allowing the user to grant a site more space. This enables sites to store many user-created documents on the user's computer, for instance.
Is this available yet? If so, how would I use it?
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Jun 29, 2010
I'm trying to pull data from multiple database tables and output them into a table which I've done fine, but I'm having trouble trying to filter the rows by specific values like colour and size selected from select boxes without reloading the page.
After more than a day of looking though I have made no progress, If this was to be done with just PHP and MySQL reloading the page I'd have no problem but having problems with the AJAX side.
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Oct 13, 2009
I'm requesting a very large JSON dataset for a table via AJAX and I'm building it on the fly with JQuery. What would be the most efficient way to build it?
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May 22, 2009
We are using jQuery JavaScript Library v1.3.1 for paging and sorting purposes. This library is working fine when we are loading smaller
data sets (<1000 records) on the page. However, when data set starts getting large (>3000 records), the initial page gives a script loading
error and the page does not load at all.
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Oct 1, 2009
I am having a little problem trying to show a loader (An animated GIF) while some request to a database happens. I have a page where the user selects a YEAR and when they select it with AJAX I perform a request to a database to get all the values for that specific year.
The problem is that there is a lot of information (4000+ records) that I need to query and show in a table (Actually I didn't use a table I use DIVs that look like a table), and when the user selects the year the webpage freezes for about 5 seconds and then it loads all of the data.
Is there a way to sort of show an image loader gif while the data is being gotten? I tried putting the loader image in the DIV container while no year is selected and then once the request is done, I substitute the DIV container's contents (The image loader) for the data from the database.
[Code]...
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Sep 13, 2010
I have here a code that will automatically generate two text fields (Title & Price) when "Add another article" is pressed. I got this from the web, but I want instead of using a text field, I want it to create a drop down menu based on a mysql table, then update the price automatically (also based on the mysql table) on the other text field once a selection has been made on the drop down menu.
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Nov 2, 2011
Hello, I have a very large function that activates on one click. It does many individual events that modify my site. They all work seperately but when I put them in a single function they all break. Is there a way, order or priority for putting large things of code in functions?
I tried doing {} blocks but it didn't help.
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Jul 20, 2005
Is it possible to make table rows visible/unvisible by javascript. If the answer is yes, can someone give me a working example.
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Nov 21, 2009
I'm working on a script that inserts things into tables. It's complicated and involves xmlhttp and lots of stuff, but I've narrowed the problem down to something simple. The following code does not work in IE. It doesn't generate an error, but simply displays nothing. Here is the code:
<body>
<table id="test">
</table>
[code]....
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Jan 11, 2011
I am trying to hide a table based on its id on clicking a button.
function showTable() {
var reasonTable = document.getElementById("reasonTable");
if(reasonTable.style.display == "none")
{
reasonTable.style.display = "block";
reasonTable.style.visibility = "visible";
[Code]...
It is giveing null for document.getElementById("reasonTable"). Whats wrong in above code.
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Feb 1, 2006
I have a table that holds a form. At the bottom of the table it has a link that says ... "Add another entry" When clicked it should add another table below that one for the user to fill out. This is designed for a Resume Builder where the user will be able to input multiple jobs. I have the script "kinda" working but the only problem is that I have to try and cram the entire table code into ONE line. If it expands multiple lines it doesn't work. I was wondering if anyone could help me out on that one... Code:
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Jun 11, 2009
I have created a table 2cols x 10rows. I would like to put a javascript that when I entered a value (string or integer) in cell 1, the other cell will be populated by the same value. It sort of copy and paste.
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Aug 25, 2011
Here`s my code.
<html>
<body>
<script type=text/javascript>
var n=0;
while(n<=10)
{
[Code]...
but they are in the center. I want to put them in a table. then put BG color in it.
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Apr 10, 2007
I would like to calculate factorial numbers that produce results of
say 100 digits. What is the best way of doing it in Javascript?
Can I define a variable and somehow have control on each of its digits
individually?
Can I multiply two relatively small numbers and determine that there
was a carry?
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