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Why does javascript map function return undefined?
...u actually want to filter the array, which a map function is not suitable for.
What you actually want is a filter function. It takes a function that returns true or false based on whether you want the item in the resulting array or not.
var arr = ['a','b',1];
var results = arr.filter(function(ite...
Break statement in javascript array map method [duplicate]
... is met ? I tried the following which throws "Illegal Break Statement" Error. This is some random example I came up with.
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Why does Javascript's regex.exec() not always return the same value? [duplicate]
In the Chrome or Firebug console:
3 Answers
3
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jQuery count child elements
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You can use .length with just a descendant selector, like this:
var count = $("#selected li").length;
If you have to use .children(), then it's like this:
var count = $("#selected ul").children().length;
You can test both versions here.
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How to change the ROOT application?
...r Tomcat webapps folder (rm -fr *). Then rename your WAR file to ROOT.war, and finally start your Tomcat from the bin directory (sh startup.sh).
Leave your war file in $CATALINA_BASE/webapps under its original name. Turn off
autoDeploy and deployOnStartup in your Host element in the server.xml file...
Get Bitmap attached to ImageView
... actually be cast to BitmapDrawable (to avoid IllegalCastExceptions). If, for instance, you use layers in your image then this snippet will be slightly different: Bitmap bitmap = ((BitmapDrawable)((LayerDrawable)image.getDrawable()).getDrawable(0)).getBitmap();
– Alex Semeniuk
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Subtract days from a DateTime
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That error usually occurs when you try to subtract an interval from DateTime.MinValue or you want to add something to DateTime.MaxValue (or you try to instantiate a date outside this min-max interval). Are you sure you're not assigni...
MySQL string replace
...ic control over what gets replaced. Without one every row will be checked and potentially data replaced if a match is found.
– Carlton
Sep 11 '14 at 10:53
11
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Check whether a request is GET or POST [duplicate]
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You can use === or ==. The former is just good practice, as it checks if the variables are 'identical'. (EG: 5 == '5' is true, but 5 === '5' is false)
– Justin
Sep 19 '16 at 22:41
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Make code in LaTeX look *nice* [closed]
I'm currently writing a project report, and to explain the slightly crazy un-intuitive code that I've used I need to put lots and lots of short excerpts of example code in.
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