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Is there a “null coalescing” operator in JavaScript?
...Boolean(null)); // false
alert(Boolean(undefined)); // false
alert(Boolean(0)); // false
alert(Boolean("")); // false
alert(Boolean("false")); // true -- gotcha! :)
This means:
var whatIWant = null || new ShinyObject(); // is a new shiny object
var whatIWant = undefined || "well defined"; // is "...
jQuery equivalent of getting the context of a Canvas
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Try:
$("#canvas")[0].getContext('2d');
jQuery exposes the actual DOM element in numeric indexes, where you can perform normal JavaScript/DOM functions.
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Is short-circuiting logical operators mandated? And evaluation order?
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edited Sep 23 '11 at 15:07
answered Mar 10 '09 at 0:37
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My attempt at value initialization is interpreted as a function declaration, and why doesn't A a(())
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There is no enlightened answer, it's just because it's not defined as valid syntax by the C++ la...
How to try convert a string to a Guid [duplicate]
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new Guid(string)
You could also look at using a TypeConverter.
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What is the right way to check for a null string in Objective-C?
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20 Answers
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GroupBy pandas DataFrame and select most common value
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10 Answers
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inserting characters at the start and end of a string
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answered Apr 8 '12 at 0:47
Mark ByersMark Byers
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How do I decode a string with escaped unicode?
...ouble searching for it. How can I decode a string with unicode from http\u00253A\u00252F\u00252Fexample.com to http://example.com with JavaScript? I tried unescape , decodeURI , and decodeURIComponent so I guess the only thing left is string replace.
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How to convert comma-delimited string to list in Python?
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edited Apr 18 '13 at 0:36
answered Oct 21 '11 at 1:35
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