How do I create nested elements in Javascript object through dot notation only? like
a= {};
a.b = 100; //is valid
a.x.y = 200; //is invalid?
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Sorry about that, I have updated the questionRnet– Rnet2013-08-08 19:56:52 +00:00Commented Aug 8, 2013 at 19:56
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Thanks! I removed the json tag.bfavaretto– bfavaretto2013-08-08 19:57:33 +00:00Commented Aug 8, 2013 at 19:57
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Also, sorry if I was harsh, the intention was only to be instructive. Calling an object literal "json" is a common misconception.bfavaretto– bfavaretto2013-08-08 20:00:16 +00:00Commented Aug 8, 2013 at 20:00
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2 Answers
The 3rd is invalid as a.x is undefined.
And you are trying to set a value to a undefined property
a= {};
a.b = 100; //is valid
a.x = {};
a.x.y = 200; // This works
3 Comments
Rnet
Yes this works, unfortunately I have to nest 7 ~ 10 objects. I can accomplish it using a["x.y....."] but it is discouraged where I work, due to some code style checks.
mamapitufo
you can use a literal object notation like this:
a = { b: 100, x: { y: 200 } }. You can nest arrays, other objects or assign functions, numbers or strings to each property. With proper indentation this way of defining a complex structure can be very clear.
Sushanth --
@mamápitufo. That's a good way to do it, without initializing every object it the path of the object
You can't exactly.
a.x = {y: 200};
