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How to implement “select all” check box in HTML?
I have an HTML page with multiple checkboxes.
29 Answers
29
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Best way to store a key=>value array in JavaScript?
...just what a JavaScript object is:
var myArray = {id1: 100, id2: 200, "tag with spaces": 300};
myArray.id3 = 400;
myArray["id4"] = 500;
You can loop through it using for..in loop:
for (var key in myArray) {
console.log("key " + key + " has value " + myArray[key]);
}
See also: Working with objects...
Convert hex to binary
...roblem:
my_hexdata = "1a"
scale = 16 ## equals to hexadecimal
num_of_bits = 8
bin(int(my_hexdata, scale))[2:].zfill(num_of_bits)
It will give 00011010 instead of the trimmed version.
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How to pass anonymous types as parameters?
...void LogEmployees (IEnumerable<dynamic> list)
{
foreach (dynamic item in list)
{
string name = item.Name;
int id = item.Id;
}
}
Note that this is not strongly typed, so if, for example, Name changes to EmployeeName, you won't know there's a problem until runtime.
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Naming convention for unique constraint
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My thinking is it isn't a key: it's a constraint.
It could be used as a key of course, and uniquely identifies a row, but it isn't the key.
An example would be that the key is "ThingID", a surrogate key used in place of ThingName the nat...
Using jQuery to see if a div has a child with a certain class
I have a div #popup that is dynamically filled with several paragraphs with the class .filled-text . I'm trying to get jQuery to tell me if #popup has one of these paragraphs in it.
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How do I make UITableViewCell's ImageView a fixed size even when the image is smaller
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It's not necessary to rewrite everything. I recommend doing this instead:
Post this inside your .m file of your custom cell.
- (void)layoutSubviews {
[super layoutSubviews];
self.imageView.frame = CGRectMake(0,0,32,...
When should iteritems() be used instead of items()?
Is it legitimate to use items() instead of iteritems() in all places? Why was iteritems() removed from Python 3? Seems like a terrific and useful method. What's the reasoning behind it?
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SELECT * FROM X WHERE id IN (…) with Dapper ORM
What is the best way to write a query with IN clause using Dapper ORM when the list of values for the IN clause is coming from business logic? For example let's say I have a query:
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How to Turn Off Showing Whitespace Characters in Visual Studio IDE
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CTRL+R, CTRL+W : Toggle showing whitespace
or under the Edit Menu:
Edit -> Advanced -> View White Space
[BTW, it also appears you are using Tabs. It's common practice to have the IDE turn Tabs into spaces (often 4), via Options.]
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