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Best Practice: Access form elements by HTML id or name attribute?
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Give your form an id only, and your input a name only:
<form id="myform">
<input type="text" name="foo">
Then the most standards-compliant and least problematic way to access your input element is via:
document.getElementById...
What characters are allowed in DOM IDs? [duplicate]
... is a difference between HTML and XHTML.
As XHTML is XML the rules for XML IDs apply:
Values of type ID MUST match the Name production.
NameStartChar ::= ":" | [A-Z] | "_" | [a-z] | [#xC0-#xD6] |
[#xD8-#xF6] | [#xF8-#x2FF] |
[#x370-#x37D] | [#x...
Check whether an input string contains a number in javascript
My end goal is to validate an input field. The input may be either alphabetic or numeric.
12 Answers
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jQuery or CSS selector to select all IDs that start with some string [duplicate]
How can I select all elements whose id starts with "player_"?
4 Answers
4
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sqlalchemy flush() and get inserted id?
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Your sample code should have worked as it is. SQLAlchemy should be providing a value for f.id, assuming its an autogenerating primary-key column. Primary-key attributes are populated immediately within the flush() process as they are generated, and no call to commit() should be required. So th...
Foreign Key to multiple tables
...on your needs.
You could simply create two columns in Ticket, OwnedByUserId and OwnedByGroupId, and have nullable Foreign Keys to each table.
You could create M:M reference tables enabling both ticket:user and ticket:group relationships. Perhaps in future you will want to allow a single ticket to ...
Filter dataframe rows if value in column is in a set list of values [duplicate]
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Use the isin method:
rpt[rpt['STK_ID'].isin(stk_list)]
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MySQL foreign key constraints, cascade delete
I want to use foreign keys to keep the integrity and avoid orphans (I already use innoDB).
3 Answers
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Want to find records with no associated records in Rails
Consider a simple association...
8 Answers
8
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How do I search for an object by its ObjectId in the mongo console?
...Make sure the collection name is correct (case matters) and that the ObjectId is exact.
Documentation is here
> db.test.insert({x: 1})
> db.test.find() // no criteria
{ "_id" : ObjectId("4ecc05e55dd98a436ddcc47c"), "x" : 1 }
> db.test....