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How to determine whether an object has a given property in JavaScript
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Object has property:
If you are testing for properties that are on the object itself (not a part of its prototype chain) you can use .hasOwnProperty():
if (x.hasOwnProperty('y')) {
// ......
}
Object or its prototype has a property:
You ca...
MySQL vs MySQLi when using PHP [closed]
...QL Improved Extension Overview, it should tell you everything you need to know about the differences between the two.
The main useful features are:
an Object-oriented interface
support for prepared statements
support for multiple statements
support for transactions
enhanced debugging capabiliti...
Regex (grep) for multi-line search needed [duplicate]
...ine at the end of line, substituting it for null character. That is, grep knows where end of line is, but sees the input as one big line.
-o print only matching. Because we're using -z, the whole file is like a single big line, so if there is a match, the entire file would be printed; this way it w...
What jsf component can render a div tag?
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I make this answer in 2011. now, I am using primefaces, and feels very good of it
– jack jin
Jan 8 '16 at 7:49
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How can I properly handle 404 in ASP.NET MVC?
...class so you can easily invoke your custom 404 action and wire up HandleUnknownAction
404s in ASP.NET MVC need to be caught at a number of places. The first is HandleUnknownAction.
The InvokeHttp404 method creates a common place for re-routing to the ErrorController and our new Http404 action. Thi...
How to update npm
...nload/
For historical understanding: Chis Lea was maintaining his PPA but now joined forces with nodesource.
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reformat in vim for a nice column layout
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Anyone know of a solution to work with quoted columns with commas in the column? example "2151 Main ST Houston, TX"
– metrix
Dec 30 '13 at 2:47
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SQL UPDATE SET one column to be equal to a value in a related table referenced by a different column
...D set q.QuestionID = a.QuestionID; seems to be the same basic query in a different order. any idea why?
– billynoah
Apr 12 '14 at 22:39
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Get element inside element by class and ID - JavaScript
...ighne the exact requirements of OP was that he "would like to get more specific". The person asking the question was asking how he could be more specific in his DOM tree traversal. The use of getElementByClassName was not a point of confusion, but I can see how someone might easily think I was ind...
Equivalent of *Nix 'which' command in PowerShell?
...me)
{
Get-Command $name | Select-Object -ExpandProperty Definition
}
Now, when you reload your profile you can do this:
PS C:\> which notepad
C:\Windows\system32\notepad.exe
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