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What do querySelectorAll and getElementsBy* methods return?
... other getElementsBy* methods return an array-like collection of elements. Iterate over it like you would with a real array:
var elems = document.getElementsByClassName('myElement');
for(var i = 0; i < elems.length; i++) {
elems[i].style.size = '100px';
}
If you prefer something shorter, c...
How do I convert a String to an int in Java?
..., you can use an Ints method from the Guava library, which in combination with Java 8's Optional, makes for a powerful and concise way to convert a string into an int:
import com.google.common.primitives.Ints;
int foo = Optional.ofNullable(myString)
.map(Ints::tryParse)
.orElse(0)
...
Origin is not allowed by Access-Control-Allow-Origin
...trol-Allow-Origin * setting in the Apache configuration or htaccess file.
It should be noted that this effectively disables CORS protection, which very likely exposes your users to attack. If you don't know that you specifically need to use a wildcard, you should not use it, and instead you should ...
Pass array to ajax request in $.ajax() [duplicate]
... yes...that worked..thanks..one more thing can be done ...that is initialize info = {}; then data: info,
– Poonam Bhatt
Jan 18 '12 at 4:45
2
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How to search for a string in text files?
I want to check if a string is in a text file. If it is, do X. If it's not, do Y. However, this code always returns True for some reason. Can anyone see what is wrong?
...
Why is enum class preferred over plain enum?
...ses - enumerator names are local to the enum and their values do not implicitly convert to other types (like another enum or int)
Plain enums - where enumerator names are in the same scope as the enum and their
values implicitly convert to integers and other types
Example:
enum Color { red, green...
How to get ID of the last updated row in MySQL?
...value', id = (SELECT @update_id := id)
WHERE some_other_column = 'blah' LIMIT 1;
SELECT @update_id;
EDIT by aefxx
This technique can be further expanded to retrieve the ID of every row affected by an update statement:
SET @uids := null;
UPDATE footable
SET foo = 'bar'
WHERE fooid > 5
...
Trying to git pull with error: cannot open .git/FETCH_HEAD: Permission denied
...
It seems like the first one isn't working because your user doesn't have the permissions for changing that directory, and the second because your root user doesn't have the right SSH keys for accessing that git repository.
D...
applicationWillEnterForeground vs. applicationDidBecomeActive, applicationWillResignActive vs. appli
...when an application is waking up from being in the background and you want it to prep it to be active?
7 Answers
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What events does an fire when it's value is changed?
...ws what events an HTML5 <input type="number" /> element fires when its up / down arrows are clicked:
5 Answers
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