Difference between the javascript String Type and String Object? does not include case 2.
All of these expressions seem to do mostly the same thing. How are they different?
'message'String('message');new String('message');
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We Are All Monica
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`new String('message') !== 'message'` is the big one. – user2357112 Aug 02 '14 at 05:51
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See http://stackoverflow.com/questions/2051833/difference-between-the-javascript-string-type-and-string-object – user2357112 Aug 02 '14 at 05:53
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1Never do `2` and `3`. Never. (Well maybe in some cases you would use it but normally you don't and you shouldn't) If you use it and you don't know what you're doing you will get mysterious errors in your code. – Derek 朕會功夫 Aug 02 '14 at 05:57
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In what situations do `2` and `3` break things but `1` does not? – We Are All Monica Aug 02 '14 at 06:05
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@user2357112 Are there situations in which `2` and `3` behave differently? – We Are All Monica Aug 02 '14 at 06:09
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`String('message')` is equivalent to `'message'`, so it has all the differences with `new String('message')` that `'message'` does. – user2357112 Aug 02 '14 at 06:29
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Basically 'message' is just a string litrel. You can just use String functions on that.
What I know that String('message') & 'message' are same.
But on new String() create a new Object of type String. So you will be able to define your properties & methods on it.
Like bellow
var msg = new String('message');
msg.sender = "Someone".
msg.sender //returns "Someone"
var msg = String('message');
msg.sender = "Someone".
msg.sender //returns undefined
var msg = 'message';
msg.sender = "Someone".
msg.sender //returns undefined
But you can't do sane on litrels.
Mritunjay
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What is the difference between `String('message')` and `new String('message')`? – We Are All Monica Aug 02 '14 at 06:04
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