Undefined values: Difference between revisions
Content deleted Content added
Explained Oz. |
m →{{header|JavaScript}}: Added semicolons, added how deletion is handled. |
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=={{header|JavaScript}}== |
=={{header|JavaScript}}== |
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<lang javascript> |
<lang javascript>var a; |
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var a |
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typeof(a) == "undefined" |
typeof(a) == "undefined"; |
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typeof(b) == "undefined" |
typeof(b) == "undefined"; |
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var obj = {}; // Empty object. |
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obj.c == null; |
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</lang> |
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obj.c = 42; |
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obj.c == 42; |
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delete obj.c; |
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obj.c == null;</lang> |
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=={{header|Oz}}== |
=={{header|Oz}}== |