setting property of js map/object

Can i use

myWidget.errorLableMap.key ="errormsg";  

insted of following to set property of a js object/map.

myWidget.errorLableMap["key"] ="errormsg";
开发者_StackOverflow社区

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You can do both - they are equal ways of assigning a property value. The difference is - using [] you can work with properties that are not valid variable names in javascript, e.g. you can do:

myWidget.errorLableMap["key 1"] = "something"

but obviously following will not work:

myWidget.errorLableMap.key 1 = "something"