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Sarath TS
1,022 PointsAccessing a property inside an object by square bracket.
In the quiz, a property is being accessed via square bracket like below.
var key ="name"; cat[key];
Question is to choose NOT a valid way to access property in an object. And I selected this answer. But system says my answer is wrong. To my understanding while mentioning property via square bracket it should in double quotes. Or is this way of accessing., cat[key] - without double quotes is also valid?
2 Answers
Tomasz Halaczkiewicz
21,845 Pointsthat "key" passed in a square bracket is a string. It is a string "name" hidden in a variable named "key".
var key ="name"; - here you declare variable key and assign string "name" to it.
cat[key]; - and here you call that variable and the string it holds is being passed.
Hope that helps :)
Sarath TS
1,022 PointsYeaaahhhh..., Got it. (y) . Thanks Halaczkiewicz