How To Get The Physical Memory Status From The Javascript?
Aug 19, 2006I want to get the physical memory status, say, the total amount of
physical memory, the free memory, and so on, from the javascript, is it
a mission impossible?
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Load An HTML Image From Memory Instead Of A Physical File?
Jan 16, 2011I am developing a mobile app using html/css/js; this app needs to capture images using phone's camera and perform some actions on the images. Since I am using js, which by definition and design does not and can not have I/O functions, I keep the images in memory. However, when I try to display the pictures, using <IMG SRC='...'> it seems that the only way for HTML to load an image is from a physical, disk-based file. Since the trivial solution (to create a "RAM disk" and put these "files" there) is not accessible from html/css/js platform, I wonder if someone else have had this problem before.
View 3 Replies View RelatedJavaScript And Memory Leak
Mar 26, 2006I was wondering how good is JavaScript with memory management. I have
an object called MANAGER that has a list of other objects, each one
managing a single DOM nodes, etc. In my implementation of
MANAGER.reset(), I simply recreate my MANAGER.object_list = new
object(); and do a single MANAGER.domnode.innerHTML = '' as apposed to
getting my hands dirty. Is my app leaking memory?
Memory Leak IE Javascript Attribute Add Onblur
Oct 3, 2007I posted this originally in the csharp group, but I think that may be the wrong group. This seems more appropriate:
I'm running into an issue with a memory leak in an Asp.Net web page.
In the code behind (.cs) I'm adding onchange, onblur and onfocus events to a bunch of objects that reside on my page (textboxes and dropdownlist).
After using Drip i've found that these are leaving open DOM objects....
Memory Leak - When Use Mouse Wheel In Firefox To Scroll Contents Of The DIV - Memory Usage In Firefox Goes Through The Roof
Mar 26, 2009First the code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8"/>
<title></title>
<script type="text/javascript">
function TextScroll(scrollname, div_name, up_name, down_name, top_name){
[Code]...
When I use mouse wheel in Firefox to scroll contents of the DIV, memory usage in Firefox goes through the roof. Code above is a fully working page, if anyone would like to see what's up, just load it up, and start moving your mouse wheel in the area with text. You don't actually have to scroll the text, just moving the wheel back and forth in that DIV will do. Memory usage will start going up quite fast, and after you stop moving the wheel, it will finally come down a bit after a short while. I've highlighted in red the line where mousewheel event is registered for Firefox. I'm not sure if it's really a problem, but since Opera and IE don't have any strange memory usage, and Firefox does, maybe I did something wrong. In everyday use it shouldn't matter [don't expect to have kilometers of content to scroll], but anyway, it is a bit unsettling.
Javascript Window.status.visible Method In IE6
Jul 23, 2005I am trying to determine whether the status bar is visible or not .. is
there a method to check the state? I did a google search and found
info re: window.status.visible but it returns undefined?! Has it been
deprecated?
The Best Way To Disable Javascript Link Shown In Status Bar?
Feb 17, 2007a traditional javascript usage such as
<a href="javascript:void(0)"
or
<a href="javascript:doSomething()"
will both show the javascript link on the browser status bar...of
course you can use onmouseover to set the status bar text...but you
need to do on all the link....a little over kill.
Scale A Canvas Physical Size?
Jun 23, 2011My javascript canvas width and height are both 960. I have found that my screen horizontal and vertical resolutions are both 96 dpi. Thus, when a drawing is rendered in the full width and height of the canvas, it should be measurable by a ruler to be physically 10 inches by 10 inches. I did measure the display on the screen and found it to be actually about 11 and 3/16 inches wide. What is the proper way to scale a canvas so that the resulting physical dimensions can be calculated more precisely?
View 4 Replies View RelatedHow To Distinguish Between Logical Click And Physical Click
Mar 4, 2009is there anyway of distinguishing between whether the button is clicked directly by a mouse or its click event has been triggered logically?
<input type="button" id="someID" value="dene" onclick="alert('something');" />
<input type="button" value="dene2" id ="someID2" onclick="document.getElementById('someID').click()" />
i want some kind of thing : when you directly click on someID button, it wont do anything, but when you click on someID2 button, it will alert.
Distinguish Between Logical Click And Physical Click?
Mar 4, 2009Is there anyway of distinguishing between whether the button is clicked directly by a mouse or its click event has been triggered logically?
I want some kind of thing : when you directly click on someID button, it wont do anything, but when you click on someID2 button, it will alert.
Counter Help ... Out Of Memory
Jan 27, 2007I need help with this code. its a counter.
var count= 0
function onm() {
atextbox.value=ffee
count++
setTimeout(onm(),100)
}
And in the body:
<body onload="onm()">
<input type="text" value="0" name="atextbox">
</body>
I get always an error: Out of memory
JS Memory Leak
May 2, 2006I've been putting together a small pet project. Once it was finished i realised it had a gigantic memory leak inside of it. I tried to read up on the subject, but couldn't find the source of the problem via the articals.
This site is very simple, so I'd think idenifying (and hopefully fixing) the problem would be easy. Here is the relavent portions of JS (followed by links to the full page incase you need to see that): Code:
Memory Leak With InnerHTML
Nov 20, 2006Internet Explorer leaks memory when I update a div container using
innerHTML, this does not occur in firefox. This would not be a problem
except the webpage is required to be left on for weeks on end without
being restarted. I presume the issue with innerHTML is that Internet
Explorer apparently parses what you give it and then decides on how to
construct the dom elements itself, so never truely creates what you
give it.
I know that the innerHTML is the problem as I have successfully
narrowed down the leak to that line. It only leaks memory when I assign
content to the innerHTML of my containing DIV. Appending a text node,
for example, with the exact same information to the same div does not
leak. Note I have also tried using such existing AJAX packages like
Prototype etc. but to no avail.
I need to do it this way as my XML documents are styled using an XSL
stylesheet and then transformed using transformNode [I will omit
details regarding firefox as there is no problem there]. I have looked
into transformNodeToObject as a way to get a dom object that I
originally assumed could be appended [as a child] to my containing
element. This did not work and gave me compatibility errors.
I suppose I am either looking for someone who has solved this problem,
or who has an acceptable work around. Or someone to say that it cannot
be solved.
Clear Memory Of Browser?
Mar 16, 2009I am using javascript to load and parse a big xml file (around 1 mb) save some values to an array and draw a picture using google Flot. Unfortunately, this causes the browser to crash! Is there a way to clear the memory of the browser?
View 2 Replies View RelatedReplacing Images And Memory Use
May 27, 2010I am developing a simple image editor in an HTA (for a special use-case). Because it is an HTA, it runs in IE only (IE7 to be precise).
Everything is working great so far, however, because I am loading the same img src file over after every edit, I had to attach " + Math.random();" to the image src so that the updated image is displayed.
This has lead to some pretty severe memory issues, as each time I make an edit, it caches another image. Under normal operation, my app uses under 20MB with a single image loaded, however after every edit it adds about 3MB. After a few minutes of testing I have had it consuming over 200MB!
Is there another way to use the same file name, same image src, etc, but have the browser re-read the file before displaying it again rather than using a cached copy.
Alternately, is there a way to make the browser forget about the other copies it has in memory to keep memory usage under control.
Memory Functions On A Calculator?
May 22, 2010I'm trying to make a calculator in HTML/Javascript but I'm having trouble with the memory buttons. Here is the code:
<html>
<head>
<title>Env X Software | Env X Online Calc</title>
[code]....
Objects And Memory Usage - To Be As Low As Possible
Jul 4, 2009I'm writing a very complex javascript application and I'd like memory usage to be as low as possible, so I've got a question about objects.
I'm using jQuery and my code is a bunch of jQuery plugins that interact with eachother. Will there be a difference in memory usage if I declare functions like this:
I haven't written anything in javascript as complex as I'm about to write, so I never worked with objects. As far as I understand, $.fn.whatever will add function to prototype, while $.whatever will add function only to one entry of jQuery object.
So question comes down to this: when jQuery object is being created, are functions in it being copied (meaning increase in memory usage) or does javascript only make references (meaning no significant increase in memory usage) to one main entry of that function in prototype?
Browser Dom Memory Size?
May 18, 2010what is DOM maximum memory size? is Diff from browser to Browser?
View 1 Replies View RelatedBrowser Not Releasing Memory?
Oct 5, 2011take a look at the below code. The below code is small representation of a bigger system.
HTML Code:
<html>
<head>
<style type="text/css">
</style>
[Code]...
However the problem is that once the tabs/iframes are removed the browser does not release the memory. This happens both in IE8 and FireFox. So over a period of time the memory consumed by the browsers are huge because of the creation and deletion of new tabs/iframes and the application slows down. Is there a way to make the browser release memory when an iframe is removed.
JS Memory Leak Prevention?
Jan 19, 2010Do the latest browsers still need this? I could find an article about IE8 which states that its garbage collection has improved so circular references shouldn't be a big problem any more.Reason for asking is that I maintain an JavaScript / AJAX framework and we are currently optimizing our code which contains a lot of code to remove references from and to the DOM and to remove event listeners.
View 1 Replies View RelatedPrevent Memory Leaks In IE6 And IE7?
Apr 26, 2011What is the best way to prevent memory leaks in IE6 and IE7?
I'm working on an internal web app that just gets slower and slower, using more and more CPU load and memory, unless and until you close the browser and start, again.
Memory Requirements For An Object's Methods
Jul 23, 2005I am a little confused how the memory for objects is allocated in
JavaScript. David Flanagan, in "javascript: The Definitive Guide,"
states that each property of a class takes up memory space when
instantiated. So space is created for aMethod three times in this
example: Code:
JQuery :: Memory Leak While Using Ezpztool Tip
Feb 19, 2010Below is my code which refreshes every 10 seconds
[Code]...
What happens there is a memory leak of the divs with idsliveAuthen-target-1000 andliveAuthen-content-1000
JQuery :: Remove A Function From The Memory
Mar 16, 2011It is possible to remove a function from the memory? I have a custom function that I call usingmodul.StepGuide.init() - but how do I remove that function with all its vars and events, from the memory.
View 1 Replies View RelatedEnable Cookie Memory To Whatever A User Does?
Feb 5, 2009is there a "javascript" way to enable cookie memory to whatever a user does. for example, if the user wants to edit something and then save it and the cookie will memorize it even if they clear cookies??
View 1 Replies View RelatedFading Images In And Out With A Loop - Out Of Memory
Mar 8, 2010I'm designing a page to fade multiple images (three) in and out over a set period of time (one minute, say). The code I have works as follows:
I define an array and fill it with the div objects I want to fade in and out. I have some simple tags (2 for opaque, 1 for fading in, -1 for fading out, etc.) that I set to show the state of the object.
First I check if the object is opaque, and if so set it to fade along with a time;
Or if it's transparent I give it a 1 in 10 chance of fading in during this iteration. If it's currently fading in or out I check to make sure it's on track and change the opacity of the div accordingly.
Originally, I had the function call back to itself using setTimeout after the loop had gone through all the divs and changed their opacities appropriately. This caused an out of memory error (though, strangely, if I had any alerts in the function it didn't give me the error).
So the version below has the code in a while loop to let it run for 20 seconds - this gives me the "a script...run slowly, do you want to continue the script?" message.
So I have several questions:
1) First and foremost, why is my function causing out of memory/run slowly errors and what is the best way to fix that?
2) Is there a better way to code this effect (final result will be six lights fading in and out for a minute or so).
3)I'm not an experienced programmer, so any bad practices, ways to streamline, no no's, etc. that you see, please point out.
I've only posted the script here - the page simple consists of three divs (id's grad0, grad1, grad2) and a call to the function copied here.