If you are totally new to javascript, you should first jot down what exactly you need to learn before getting started. Below is the list of concepts every Javascript developer must know.
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Datatypes
Scoping
Objects
Functions
Function expressions and declaration
“this” keyword
Currying
Closures
Hoisting
Higher-order functions
Immediately Invoked Function Expressions — IIFE
Execution stack and context
Asynchronous JS and event loop
Temporal dead zone
Method overriding
Inheritance
Prototypes
Value vs reference
Promises
Design patterns
Modules
DOM and BOM
Event bubbling and capturing
Array and object methods
Plugins in Javascript
You can also refer to this article to understand most of the above-listed topics in detail.
