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JavaScript validation for empty input field
I have this input field
<input name="question"/> I want to call IsEmpty function when submit clicking submit button.
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How to read an external local JSON file in JavaScript?
I have saved a JSON file in my local system and created a JavaScript file in order to read the JSON file and print data out. Here is the JSON file:
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SQLAlchemy ORDER BY DESCENDING?
How can I use ORDER BY descending in a SQLAlchemy query like the following?
6 Answers
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Nesting await in Parallel.ForEach
In a metro app, I need to execute a number of WCF calls. There are a significant number of calls to be made, so I need to do them in a parallel loop. The problem is that the parallel loop exits before the WCF calls are all complete.
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How to add a TextView to LinearLayout in Android
I am trying to add TextViews to my xml-defined layout in code.
I have a xml-sheet, where a lot of Views are defined. But I have to add some views in code, so a create a LinearLayout in the xml-sheet:
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How do I drop a function if it already exists?
...CT * FROM sysobjects WHERE id = object_id(N'function_name')
AND xtype IN (N'FN', N'IF', N'TF')
)
DROP FUNCTION function_name
GO
If you want to avoid the sys* tables, you could instead do (from here in example A):
IF object_id(N'function_name', N'FN') IS NOT NULL
DROP FUNCTION functio...
Set selected option of select box
...elected previously to be displayed on page load. I tried it with the following code:
16 Answers
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“INSERT IGNORE” vs “INSERT … ON DUPLICATE KEY UPDATE”
While executing an INSERT statement with many rows, I want to skip duplicate entries that would otherwise cause failure. After some research, my options appear to be the use of either:
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How to retrieve inserted id after inserting row in SQLite using Python?
How to retrieve inserted id after inserting row in SQLite using Python? I have table like this:
2 Answers
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CSS – why doesn’t percentage height work? [duplicate]
...ock element defaults to the height of the block's content. So, given something like this:
<div id="outer">
<div id="inner">
<p>Where is pancakes house?</p>
</div>
</div>
#inner will grow to be tall enough to contain the paragraph and #outer will...