What will be the best way to extract dynamically changing information from a web page that holds XML?I have to extract some data from multiple web pages.These sites contain XML code that dynamically reloads (and changes) parts of the page.Since only small parts get a refresh (perhaps 200 bytes every 5 seconds) it wouldn't be efficient (and also might lead to negative reactions from the server) to reload the whole page (about 40k) every time.How could I best determine these updated contents and send them to the program that further processes them?I am familiar with several programming languages but unfortunately have very little knowledge of internet programming.
I'm slowly discovering the world of JavaScript, so I'm not sure I'm attacking this problem in the right manner, thus if I'm in the wrong newsgroup, my apologies.
What I'm trying to do is extract some news items from a web site. To do this, I'm using Microsoft Word VBA and using the following bit of script:
I'm trying to get some average rgb values from an image in one canvas object and apply them via fillstyle to a rectangle in another canvas object.I have a dropdown that loads an image onChange()="ChangeBaseWood()" into a canvas object. The second canvas object is to be filled with an average color based on the content of the first canvas onClick="GetBaseColor()". For simplicity I've replaced the for loop with just the values of pixel 0,0. Where I think I am assigning the rgb values, the error console keeps reporting that var sample is undefined at the line "var redpart = sample[0].
function ChangeBaseWood(){ var dropdown = document.getElementById('woodvalue'); var woodcanvas = document.getElementById('basewood');[code]....
I've tried various things to assign the redpart,grnpart and blupart but I'm missing something basic.
I'm trying to write code that will extract from an XML file and then display the results. Keep getting a syntax error.
HTML: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html>[code]....
My intention was to access all of the tags (name, genre, and hitsong) in the XML file. Thought that var musicianInfo = xmlDoc.getElementsByTagName("*"); would do that. Then, loop through each tag and display the result.
I want to parse data from tables in webpages , there are no problems when I parse regular HTML tables, but it seems to be impossible to get any data from dynamic pages that update themself automatically.how to extract data from dynamic web pages? My goal is to read webpages with an application written in java, parse the page and clean the data and store it in a database.
Here is what I'm trying to do. I will pass a directory to a PHP script, that script will then return an array of filenames back to the javascript that called it. In the javascript I want to take the filenames returned and create links to them in an unordered list.
The PHP code to get the filenames is done and when I run the script I get an array that I have formatted into json... an example of the encoded array is as follows...
So here is the jquery I'm trying to use to get the filenames and create my links... But I must be missing something because my variable... data ... is empty... but status is Success.
I'm using DOM in javascript to extract data from a dynamically generated html table( table id ="tableId"). Each cell of the table includes an input field to get user input. The problem is below javascript returns "null" always when retrieving the input field value? What I'm doing wrong here?
var mytable = document.getElementById('tableId'); var mytablebody = mytable.getElementsByTagName("tbody")[0]; var myrow = mytablebody.getElementsByTagName("tr")[0];[code]....
I know this is possible to get data from a specific cell in a table on your site :
But is there any way to replace 'document' whit an external url so you can obtain data from a specific cell in a table on another webpage. Maybe like this (I know this isn't even close to be able to work...):
I'm actually not sure if this is even possible whit javascript. If not, do you know any php script whish does that job?
I am wanting to display 3 separate data feeds on my mobile website from Pachube like this [url] and have modified some code (which was designed just to display 1 feed). As you will see the code has been extended but does not display (at all!) on a iPhone, whilst the original code did. I have been told that it may be because there is no interval between each variable actualization. how to rectify this.
I am in the middle of designing a website and I am pretty new at it. The guy I am designing the website for wants me to make input fields that calculate data that is entered into them. There are 3 formulas that I need to make.
a=b*.262*c c=a/(b*.262) b=a/(c*.262)
They are the same formula just solving for different variables.
I am developing an application which allows a web site visitor to email a page to a friend using the PHP mail() function.
What I would like to do is dynmaically extract the H1 from each page using JS and store this as a PHP session named title. Can I get this info using JS?
I'm trying to code a feature for my website using DHTML where the person viewing the website can rotate between viewing the positive/negative points of the website being reviewed. This example was in the publication called Using HTML 4 by Lee Anne Phillips. Code:
I found this little script for extracting parameters from a url but wondered what the shortest and most efficient way to do it would be, like the following or via regexp?
function getParameter(paramName) { var currentUrl = window.location.search var strBegin = currentUrl.indexOf(paramName) + (paramName.length+1) var strEnd = currentUrl.indexOf("&",strBegin)
if (strEnd==-1) strEnd = currentUrl.length return currentUrl.substring(strBegin,strEnd) }
I have a ajax program on a page on website A. And I need to let it talk to a program on website B. I tried to put website B into the url of the parameter but it doesn't work.It gives me a "[objet XMLHttpRequest]" error.here is the code on website A:
I have a bit of a problem and as my javascript is a rather poor I'm struggling to come up with a solution. Basically I need to split the variable "#country" into two parts and call the second half as the "this" value for '#int-dc'. Using '+' as the start point end ending at the end of the string.
For instance 'this' returns 12+44 I want to split it to "12" and "+44" the latter (+44) replacing 'this' in the code below.
I am having trouble with retrieving data from an xml file Here is the code I am using can anyone tell me where my problem lies?
[Code]...
as I am very new to Javascript and AJAX I am not very familiar with the process yet and I have not been able to get the xml loaded. Obviously I am declaring this all wrong as I receive the error that load is not a function of xmlDoc!
This randomising function is like a coin toss, it gives a numerical result and displays it:
function Ran() { var c = Math.random(); return (c < 0.5) ? [0, show0()] : 1, show1()]; }
I want to extract the numerical outcome, 0 or 1, from this and from two other similar functions, sum them, and then run more functions based on the possible sums.
What is the syntax for getting to the numbers? something like
I have a simple form that puts the info into cookies. I then need to check the entered name against the cookies, to see if they are the same. Currently there does not seem to be any cookies to check against, becuase my window.alert comes up blank. Please look over my code and see if you can spot the issue:
Code: function getCookieData(labelName) { var labelLen = labelName.length; var cookieData = document.cookie; var cLen = cookieData.length;
I am trying to extract the domain name from a url using javascript but having some problems.
This is what I have:
Code: var publisherName = document.domain; if(publisherName.indexOf('www')){ publisherName = document.domain.substr(3,document.domain.length); }
But it is not working and I am not sure how to rid of the extension Basically, this is what I want: Whether the location being sub domain or not it need to get from somthing similar to[URL]...
