The following will bring back the last item in this dictionary.
$mydict = {"1":"one", "5":"five", "5":"five"};
$elements = $mydict["5"];
console.log($elements);
Why doesn't it bring back the last two items?
Are two of the same keys allowed?
Is there any reason to use jQuery variables when dictionaries are involved? From what I understand, jQuery doesn't know anything about dictionaries.
Dictionaries only allow one value for each unique key, so that dictionary you're defining is equivalent to:
var dict = { "1" : "one", "5" : "five" };
Also, i'm not sure what you mean with jquery variables, if you're talking about putting a '$' before your variable name, that's still a JS variable with a '$' in its name.
In Javascript objects, the last key value will override any key with same name. thus,
$mydict = {"1":"one", "5":"five", "5":"six"};
$elements = $mydict["5"];
will print six, not five
It seems that, at runtime, duplicate enties from your object gets overridden with last entry. So your object $mydict = {"1":"one", "5":"five", "5":"five"}; becomes
$mydict = {"1":"one", "5":"five"};
Just try to log $mydict
Fiddle Demo- http://jsfiddle.net/7pnb3xj8/1/
First thing, whatever prefixed with $ is not jQuery thing. In JavaScript dictionaries does not allow duplicate keys. If you try to add duplicate key and value, it will override the existing value. JS Engine thinks that you are trying to change the value if it's duplicate else it will create new reference for it.
Technically those are objects, not dictionaries. Edit: As has been pointed out, objects, and dictionaries are technically equivalent and are just key value pairs. My original comment just reflected that the terminology used to refer to them in JavaScript is objects, so you'll have an easier time searching for information on JavaScript objects than JavaScript dictionaries.
I'm guessing you're coming from python? Objects can't have more than one value with the same key, so that object is invalid in JavaScript.
Edit: Also, those aren't jquery variables. There's no such thing as jQuery variables. I think you're misreading how people use jquery. They actually use the $ which is the jQuery selector, and invoke it with the () passing in an object to turn that object into a jQuery object. so it's not $myObject, it's $(myObject).
