StackOverflow2013

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PO
primarykey
Id
17456216
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
0
CommunityOwnedDate
CreationDate
2013-07-03T19:08:16.863
FavoriteCount
0
LastActivityDate
2013-07-04T12:55:27.293
LastEditDate
2013-07-04T12:55:27.293
LastEditorUserId
2046913
OwnerUserId
2046913
ParentId
17455840
PostTypeId
2
Score
0
ViewCount
0
LastEditorDisplayName
text
Body
<p>You can use typeof and try catch : (window[fctName] doesn't always works because you aren't always in the window "scope" or you need to test object members (or simulated namespace etc.))</p> <pre><code>function isFunction(fctName) { try { return typeof(eval(fctName)) === "function"; } catch (err) { return false; } } function isFunction2(fctName) { return typeof(window[fctName]) === "function"; } var myFunc1 = function () {}; function myFunc2() {}; var aString = "hello world!"; console.log(myFunc1); // function () {} console.log(myFunc2); // function myFunc2() {} // Can't work : Exception throw // console.log(myFunc3); console.log(window['myFunc1']); // function () {} console.log(window['myFunc2']); // function myFunc2() {} console.log(window['myFunc3']); // undefined console.log(isFunction("myFunc1")); // true console.log(isFunction("myFunc2")); // true console.log(isFunction("myFunc3")); // false console.log(isFunction2("myFunc1")); // true console.log(isFunction2("myFunc2")); // true console.log(isFunction2("myFunc3")); // false console.log(isFunction('aString.toLowerCase')); // true console.log(isFunction('aString.toLower')); // false : toLower doesn't exist console.log(isFunction2('aString.toLowerCase')); // false : aString.toLowerCase isn't defined ! (but aString was) console.log(isFunction2('aString.toLower')); // false : same reason than above // So Eval can be usefull </code></pre> <p><a href="http://jsfiddle.net/L6Q9N/2" rel="nofollow">http://jsfiddle.net/L6Q9N/2</a></p>
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Title
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1. This table or related slice is empty.
PostParentId
1. POHow to get 'typeof' of the value of a variable
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  PTQuestion
PostTypePostTypeId
1. PTAnswer
UserLastEditorUserId
1. USSirus64
UserOwnerUserId
1. USSirus64
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