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Is there an onSelect event or equivalent for HTML ?
I have an input form that lets me select from multiple options, and do something when the user changes the selection. Eg,
...
How to force LINQ Sum() to return 0 while source collection is empty
...word
&& l.Property.PropertyId == PropertyId)
.Select(l => l.Amount)
.DefaultIfEmpty(0)
.Sum();
This way, your query will only select the Amount field. If the collection is empty, it will return one element with the value of 0 and then the sum will ...
Cleanest way to build an SQL string in Java
...uild an SQL string to do database manipulation (updates, deletes, inserts, selects, that sort of thing) - instead of the awful string concat method using millions of "+"'s and quotes which is unreadable at best - there must be a better way.
...
What is the maximum length of a valid email address?
...
An email address must not exceed 254 characters.
This was accepted by the IETF following submitted erratum. A full diagnosis of any given address is available online. The original version of RFC 3696 described 320 as the maximum length, but John Klensin subsequ...
How to customize ?
...ated via the label.
If you want to display the user’s chosen path after selection, you can listen for the change event with JavaScript and then read the path that the browser makes available to you (for security reasons it can lie to you about the exact path). A way to make it pretty for the end ...
Comparing date ranges
... range_start, here's some simple SQL to retrieve all the matching rows:
SELECT *
FROM periods
WHERE NOT (range_start > @check_period_end
OR range_end < @check_period_start)
Note the NOT in there. Since the two simple rules finds all the non-matching rows, a simple NOT will reve...
Use jQuery to get the file input's selected filename without the path
... your HTML do:
<input type="file" name="Att_AttributeID" onchange="fileSelect(event)" class="inputField" />
Then in your js file create a simple function:
function fileSelect(id, e){
console.log(e.target.files[0].name);
}
If you're doing multiple files, you should also be able to get...
How to Copy Text to Clip Board in Android?
... }
return "";
}
@SuppressLint("NewApi")
public CharSequence coerceToText(Context context, ClipData.Item item) {
// If this Item has an explicit textual value, simply return that.
CharSequence text = item.getText();
if (text != null) {
r...
How to find foreign key dependencies in SQL Server?
...rted. It lists all Foreign Key Relationships within the current database.
SELECT
FK_Table = FK.TABLE_NAME,
FK_Column = CU.COLUMN_NAME,
PK_Table = PK.TABLE_NAME,
PK_Column = PT.COLUMN_NAME,
Constraint_Name = C.CONSTRAINT_NAME
FROM
INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS C
...
Copy / Put text on the clipboard with FireFox, Safari and Chrome
...browsers using
document.execCommand('copy');
This will copy currently selected text. You can select a textArea or input field using
document.getElementById('myText').select();
To invisibly copy text you can quickly generate a textArea, modify the text in the box, select it, copy it, and then...