What is true about JavaScript objects?Options: One or more answers may be correctthey are mutablethey are immutablethey are created with curly brackets i.e. { }they are collection of key value pair(s)the values are of same data type
Question
What is true about JavaScript objects?Options: One or more answers may be correctthey are mutablethey are immutablethey are created with curly brackets i.e. { }they are collection of key value pair(s)the values are of same data type
Solution
The correct answers are:
- JavaScript objects are mutable. This means that we can add, change, and remove properties after it's created.
- JavaScript objects are created with curly brackets i.e. { }.
- JavaScript objects are a collection of key-value pairs. The keys are always strings, and the values can be any data type.
- The values in JavaScript objects are not necessarily of the same data type. They can be any valid JavaScript data type, including strings, numbers, arrays, functions, other objects, and so on.
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What is the purpose of the JavaScript Symbol data type?OptionsTo define custom data typesTo store binary dataTo represent unique values that can be used as object property keysTo create mathematical symbols
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How do Javascript primitive/object types passed in functions? By Value By Reference None of the above Both A and B
Which of the following is a valid way to declare an object in JavaScript?
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