🤔 Why do we need another collection to store key-value pairs when we already had objects in #javascript?
👇 Let's find out below
Problem#1 Object keys are implicitly converted to a string before performing the lookup. Therefore, obj[1] or obj["1"] gives the same result.
👇 Let's find out below
Problem#1 Object keys are implicitly converted to a string before performing the lookup. Therefore, obj[1] or obj["1"] gives the same result.
Problem#2 An object cannot be used as a key within another object. When an object is converted to a string, it becomes "[object Object].
Solution: Enter Map!
An incredible feature of Map is its ability to use any value as keys. It's not restricted to symbols or strings.
You can even use functions, objects, & dates as keys. Unlike regular objects, keys in Map won't be automatically converted to strings.
An incredible feature of Map is its ability to use any value as keys. It's not restricted to symbols or strings.
You can even use functions, objects, & dates as keys. Unlike regular objects, keys in Map won't be automatically converted to strings.
Get ready for JavaScript awesomeness! 🚀
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💡 Follow me for mind-blowing #JavaScript tips and quizzes.
💪 Let's level up our skills together!
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