I am developing a project. to calculate a key performance index (KPI) using javascript and HTML. the calculation should be in client side, and it calculate automatic after user input the value.i am very new with javascript, and i need help from all frens here..[URL]
View 7 RepliesI am wondering what the normal practice of creating an index variable is in javascript. I am wondering because I have just entered learning javascript through jquery. There is some pre-written code I am using to learn by and I am unsure of how their index variable is working in the code.
Here is the code:
Code:
jQuery(this).find("li").each(function(n) { // <-- I see that 'n' is the index
[code]....
I want to create an associative array dynamically pulling the index values from an array (propertyArray); Associative array is created inside create function and then returned. But after it is returned, I cant use index names to retrieve values. It returns undefined as below code shows.
Code JavaScript:
var propertyArray=["a","b","c"];
function create(){
var array=[];
[code]....
I have a form that contains around 20 input elements,
they have some onclick event on it.
I would like to know how can I get the form element index when the
onclick event fire.
I found no property or method to do so.
i have a login page and it is separately in my index.phpnow i need my login page become a pop up form when I open my index.phphere is my login.php
<?php
include 'config.php';
session_start();
[code]....
I'm trying to determine a better method of finding the index value of a form element. I need to find it because the JavaScript validation class has a function for validating a single form element, but it requires that the index number of the element in the form be passed in.Currently I am accomplishing this by a function that I wrote which I call for each field I want to validate:
function getIndex(element)
{
for (var i=0; i<document.thisForm.elements.length; i++)
[code]....
I have the below array called "results". When I loop through all document elements I would like to check "field_name" against the "results" array and see if it exists and what index number it is at??
// Split the comma delimited response into an array
results = result.split("~");
//Loop through array and populate fields[code].....
I try to make a dynamic form with inputs depended on selects fields. My method works in static form but I don't know how to use it in dynamic one.
JSON function ( to control correct input with select)
$(document).ready(function() {
$('select.sf').change(function() {
[code]....
I want to get index number of form element array. where I want to put name in the front of code input box. Can any body tell me that how is possible. code...
View 3 Replies View RelatedI want to get index number of form element array. where I want to put name in the front of code input box. Can any body tell me that how is possible.My code is as follow:
PHP Code:
<?php
echo "<form name="region">";
for ($i=1;$i<=5;$i++){
echo '<input type="text" name="code[]" onkeyDown="check(this)">
[code]....
I tried to use this code but it does not work
I am trying to get the index of a li with a specific class. I know I'm selecting the right object because I can apply a CSS class to it (eg change border colour) but when I try to get the index it returns -1. But I know the object exists as I can alter it. :-s
jQuery(document).ready(function() {
var active = $("#tertiarynavigation .bordered").get(0);
var num = $("#tertiarynavigation li").index(active);
alert("Index: " + num);
[Code]......
I have a form element that looks like this:
<input type="text" onchange=doSomething(this)>
and a function:
function doSomething(theField){
}
I know that within the function I can access properties of the field (e.g. theField.name and theField.value). But how do I access theField's index number in the form's elements[] array -- from the "this" reference that was passed to the function? I.E. if this field is elements[3], how can I get at that 3?
I need to move the entire contents of one div to a sibling div. At present I'm just doing (assuming the 2 divs are called 1st and 2nd):
What I need to know is if this is the quickest means (in performance terms) of doing this as I will be performing the operation regularly and on a large number of nodes and it's in an area where the UX really can't stutter ?
I have some code which creates an extremely long table row, and I've been able to clean it up to a point where my performance is fairly decent. What I am trying to figure out is if its better in terms of speed to use divs as opposed to the really long table row. I didn't really find much on this topic online, so thought I'd ask out here.
View 2 Replies View RelatedI have a problem with layers. In my example there's a link inside div#msg with 'z-index:1' and a overlay with 'z-index:2'. Now when "mousedown" fires, will change the div#msg z-index value from 1 to 3 to be on Top, so the link become a clickable link.
The question is, it is possible to make the link on top and open it with just one click?
This example can do that but won't open the link!
HTML Code:
I have read many of the copius entries on the subject of IE performance (or
the lack thereof) when populating Select Lists.
I don't mind the insert performance so much, (I get 100x120byte rows
inserted/sec up to 500, and 100rows/6secs up to 3000, which isn't great but
then the Row Count is clicking away for the user to see and they can hit the
"cancel" button at anytime, so overall I'm happy), what really disappoints
me is the woeful of .REMOVE()!
Before fetching the next result-set I clear down the existing options (I
*do* have to do this don't I?) by looping through option collection calling
remove(1). (Would it be quicker if I removed the last option? Option[0] is a
header.) For 3000 rows this takes an unbelievable 20+secs :-( Does this
sound about right?
1) Is it only IE that performs badly on this?
2) Is there a quicker or more efficient way of zeroing the Select List?
2a) The w3schools ref says the "length" attribute "Returns the number of
options in a dropdown list" it doesn't say "sets Or returns"
2b) The French guy (Stephane?) suggested that I should just set the length
to zero, but wouldn't that result in a memory leak?
3) Do I need to create a malloc/realloc function that keeps a high-water
mark of available option objects for this Drop Down and only "new" some more
options when that's exceeded? (But then the Length would always be off)
4) Use tables and not select lists?
5) Use another browser
Does Jquery perform better or worse than other Java library with regard to not triggering pop up blockers?
View 2 Replies View RelatedI just tested all my jQuery selectors using the jQuery Tester [url], and the results seem to "contradict" one thing I read in a performance article: that you should descend from the closest parent ID when using classes in your selector (the article says "April 09", so the latest jQuery version was already available). In my tests, using just the class selector (like span.myClass) was always fastest (sometimes twice as fast as #myDiv span.myClass), and this in all browsers I tested, not just the ones supporting getElementsByClassName. Maybe descending from the closest parent ID becomes a factor when you have a lot of elements on you page?
View 6 Replies View Related[URL]...why this is getting amazingly slow after running some while?
View 1 Replies View RelatedI pull XML from server using .load() and then iterate with .each() over some 3000 nodes. I use .find() to get 7 sub-nodes and store them internally (into arrays). It works, but it is disappointingly slow. On my obsolete P4 it can take 8-10 seconds during which the whole browser (FF) is completely frozen. On faster computers the processing time is shorter, but still way too long. What can I do to cut this time? I certainly need speed up of an order, two orders would be nice. Would JSON be any faster? Or should I pull text/plain in custom format and parse it in my JS code?
View 5 Replies View RelatedI have a php search page with can potentially display several hundred records. For each record, there is an icon which, when clicked, makes an ajax call. When the reply comes back, the text returned from the server script is added to a specific div and the source of the icon that the user clicked is changed (as a visual cue that that particular item was selected).
This works 100% perfect in FireFox (3.5.9), Chrome, and IE 7. However when I test it in IE 8 there is a HUGE lag between when the icon is clicked and when the div and icon are updated (usually between 10-15 seconds). By commenting out one line at a time, I've narrowed it down to the line that changes the src attribute of the icon...if I just comment that line out, the ajax call is made and the div is updated instantaneously.
[Code]...
How to improve the web site loading performance. My current site takes average time 18 sec. to load in first time. and 2nd time refresh it takes 12 sec. through YSlow I am observing the request time it more. how to achieve the better performance. My html code is very much clean and w3c validated.
View 1 Replies View RelatedI've been working on a redesign of our site at ExperiencePlus for some time now, and long ago chose CBE menu 9 over the other menu technologies out there because of its browser independance. Problem is, as you can see, we have a pretty large site; load-times for the menus and associated scripts are approaching prohibitive. So I'm trying to speed things up.
You can see the results of some simplification here - still about the same speed by my guesstimates.
So, my question is twofold, I guess. First, Mike, do you have any ideas about how long it will take X menu 4 to reach maturity? No pressure ;^) If it were ready now, I'd just drop CBE in favor of X.
Second question: How much performance improvement can I expect from removing unnecessary code (sliding, for example) from the CBE core files? I haven't played with that stuff at all, except to read it now & then when looking for solutions to problems. Does anyone have a similarly large implementation of CBE menu9 that runs faster, so that perhaps they could share their experience?
One final thing: I'm planning to eventually shove all this into a PHP document that will auto-generate chunks of the menu from database queries, especially around the tour & country listings and our "Resource Room." (X menu 4 looks like it would be vastly superior for that purpose, since it's so lean.) I'm interested in hearing from anybody who's tried to do something like this, whether they succeeded or not.
I have client that has 5 versions of the same site located in web viewable root folders on his server. Aside from a few minor differences such as prices, download url's and a few text and image differences, they're the same.
Just wanted to get some opinion as to how many javascript includes I can, or should, use on the site pages or if there are any strong opinions on not doing it this way.
I'd like to place a set of javascipt files in a folder within each site, then have all pages in each site call to their specific include folder. This way I'll be able to use a single set of DW templates to manage the content on all the sites.
I can't convert to php, use ssi nor create a dynamic solution since the sites are already live and rank well in the search engines, The content I'll be wrapping in the includes is not important search engine text content.
I am working on a list which displays a large number of contacts (400 to 500 for a typical user). Currently, I am using Dojo (customized widgit) which is created 400 times (once for each contact).This of course is resulting in alot of rendering delay. What is the best approach to display large lists in HTML/javascript? Each list item needs to have an image.
View 2 Replies View RelatedDoes anyone know if there is a significant performance difference between the below two methods of DOM creation in jQuery?
Method 1:
$("<div id='myId' class='one two three' style='width:100px; height:100px; z-index:1;' />").appendTo("body");
Method 2:
$("<div />").attr("id", "myId").addClass("one two three").width(100).height(100).css("z-index", 1).appendTo("body");
I imagine that when using the first method, jQuery does some string processing and eventually ends up doing the same thing as method #2. Is that correct? If so is there a significant performance cost for this? Overall I think the first method is better as far as readability goes but it would be good to also know its effect on performance.