Creating a dictionary in JS files

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Syntax: Key can be a string , integer. If you just write key1 or any number, it will treat as a string.

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var dict = { key1 : value1 ,
             key2 : value2 ,
             ....
           };

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Create empty dictionary

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var dict = {};

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Adding Key-Value Pairs in Dictionary

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dict[new_key] = new_value;

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or
If new_key is already present in the dictionary then the value of this will be updated to new_value.

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dict.new_key = new_value;

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Accessing Key-Value Pairs

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var value = dict[key];

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or

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var value = dict.key;

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Iterating the whole dictionary

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for(var key in dict)
 {
   console.log(key + " : " + dict[key]);
}

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