Learn JavaScript Symbol
The Complete Guide:
Thread 🧵
The Complete Guide:
Thread 🧵
The JavaScript ES6 introduced a new primitive data type called `Symbol`.
if you want to learn the concept of Data type, then you can go through it
🔗
if you want to learn the concept of Data type, then you can go through it
🔗
Symbols are immutable (cannot be changed) and are unique.
For example-
For example-
Creating Symbol
You use the `Symbol()` function to create a `Symbol`.
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You use the `Symbol()` function to create a `Symbol`.
For example -
Access Symbol Description
To access the description of a symbol, we use the `.` operator.
For example -
To access the description of a symbol, we use the `.` operator.
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Add Symbol as an Object Key
You can add symbols as a key in an object using square brackets `[]`.
For example -
You can add symbols as a key in an object using square brackets `[]`.
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![Add Symbol as an Object Key
You can add symbols as a key in an object using square brackets `[]`....](https://pbs.twimg.com/media/FcGmO30WYAAlxrk.jpg)
Symbols are not included in for...in Loop
The `for...in` loop does not iterate over Symbolic properties.
For example -
The `for...in` loop does not iterate over Symbolic properties.
For example -
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