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Published on 2010-04-26T07:54:30Z
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I've got a document fragment with children that I want to loop over (when possible). This is causing an error "Cannot read property 'xxx' of null".
How do I test if this will be the case?
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I am looking for chatroom on one page with 7 loggedin users and 6+rows for say 42 users.these users will keep on adding wthnew users.Need urgent help.A PRETTY UNUSUAL Q FOR MOST OF U.What is MORE REQ new features:
Usernames are unique to users currently chatting
You can see a "currently chatting"…
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Modern ASP.NET web applications take full advantage of client-side JavaScript to provide better interactivity and responsiveness. If you are building an ASP.NET application in the right way, you quickly end up with lots and lots of JavaScript code. When writing server code, you should be writing…
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I've been talking with a friend about the purpose of Javascript, when and how it should be used, etc. He quoted that:
JavaScript was designed to add interactivity to HTML pages
[...]
JavaScript gives HTML designers a programming tool
HTML authors are normally not programmers…
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Hi! I have been trying to get this to work for a while, and I suspect there's an easy solution that I just can't find. My head feels like jelly and I would really appreciate any help.
My main page.php makes a .post() to backend.php and fetches a list of cities which it echoes in the form of:
<li…
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Is there anyway to have javascript run when a XSL sheet has been applied to an XML file by Javascript?
I am using a JQuery plugin to apply the sheet to the xml but the javascript that is located inside of the XSL file will not run.
I put the Javascript at the bottom of the file and it still does…
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As the title says, I'm having trouble with a very noisy audio input device - the internal mic or any plugged in mics.
So far I've narrowed it down to an problem in ALSA since my debug info is showing a lot of "null" values. Can anyone help?
Debug Info: http://www.alsa-project.org/db/?f=e0c6fb7e10624bf7691aa2b405cf0d3968e56c63
Exert…
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Tuning takes many routes and I get into some interesting situations and often make some exciting finds, see http://sqlblogcasts.com/blogs/grumpyolddba/archive/2010/05/17/just-when-you-thought-it-was-safe.aspx for an example. Today I encountered a multitude of Foreign Key constraints on a table, now…
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I have few queries and am not able to figure out how to optimize them,
QUERY 1
select *
from t_twitter_tracking
where classified is null and tweetType='ENGLISH'
order by id limit 500;
QUERY 2
Select
count(*) as cnt,
DATE_FORMAT(CONVERT_TZ(wrdTrk.createdOnGMTDate,'+00:00','+05:30'),'%Y-%m-%d')…
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I need your help!!!.
I need to query a table in my database that has record of goods sold. I want the query to detect a particular product and also calculate the quantity sold. The product are 300 now, but it would increase in the future.
Below is a sample of my DB Table
#----------------------------
#…
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When doing null checks in Java code, and you throw IllegalArgumentExceptions for null values, what kind of message template do you use?
We tend to use something like this
public User getUser(String username){
if (username == null){
throw new IllegalArgumentException("username is null");…
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