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Selecting only first-level elements in jquery
...ave the initial ul, you can use the children() method, which will only consider the immediate children of the element. As @activa points out, one way to easily select the root element is to give it a class or an id. The following assumes you have a root ul with id root.
$('ul#root').children('li'...
Coalesce function for PHP?
...
Putting func_get_args() inside the foreach (here as $arg) won't change anything from a performance point of view.
– Savageman
Dec 12 '09 at 1:47
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jQuery validate: How to add a rule for regular expression validation?
I am using the jQuery validation plugin . Great stuff! I want to migrate my existing ASP.NET solution to use jQuery instead of the ASP.NET validators. I am missing a replacement for the regular expression validator. I want to be able to do something like this:
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Select element based on multiple classes
...tyling each class separately and using appropriate CSS specificity to override as best as you can.
– akamike
Mar 31 '10 at 17:07
2
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How to create json by JavaScript for loop?
... this should work:
<script>
// var status = document.getElementsByID("uniqueID"); // this works too
var status = document.getElementsByName("status")[0];
var jsonArr = [];
for (var i = 0; i < status.options.length; i++) {
jsonArr.push({
id: status.options[i].text,
o...
Find() vs. Where().FirstOrDefault()
...able and have a greater impact.
I guess my next question would be why did they add the find at all. That is a good tip. The only thing I can think of is that the FirstOrDefault could return a different default value other than null. Otherwise it just seems like a pointless addition
Find on Lis...
Select rows which are not present in other table
...pty in Postgres
FROM ip_location
WHERE ip = l.ip
);
Also consider:
What is easier to read in EXISTS subqueries?
LEFT JOIN / IS NULL
Sometimes this is fastest. Often shortest. Often results in the same query plan as NOT EXISTS.
SELECT l.ip
FROM login_log l
LEFT JOIN ip_locat...
Jenkins Host key verification failed
...tal: The remote end hung up unexpectedly
– A. M. Mérida
Mar 4 '13 at 8:40
6
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Read data from SqlDataReader
...r the firstt column on the table. I have a table with 3 columns in order: ID, Dir, Email. My command selects dir and email. Will reader.GetStrting(0) retrieve dir or ID? Are the indexes based off the table itself on SQL Server or off the query you executed to select columns from a table?
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PHP: Storing 'objects' inside the $_SESSION
...t using this approach I would like to find out if it is really such a good idea or if there are potential pitfalls involved.
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