This content originally appeared on DEV Community and was authored by Md Pervez Hossain
What is the call() Method in js ?
call() method is a built-in javascript method that allows us to invoke a function with specified “this” context.
Key Features 👍
- First parameter Sets “this” context value for the function.
- Make a function Reusable.
- Apply the same function to different objects.
- Others parameter passed with comma seperated
- It calls the function directly
What is the apply() Method in js ?
apply() method is a built-in javascript method that allows us to invoke a function with specified “this” context.
Key Features 👍
- First parameter Sets “this” context value for the function.
- Make a function Reusable.
- Apply the same function to different objects.
- Other parameters are passed as an array:
- It calls the function Immediately
What is the bind() Method in js ?
The bind() method is a built-in JavaScript method that creates a copy of the original function and returns a new function with a specified this context, rather than invoking the original function immediately.
Key Features 👍
- First parameter Sets “this” context value for the function.
- Make a function Reusable.
- Apply the same function to different objects.
- Others parameter passed with comma seperated
- creates a copy of the original function and returns a new function
- Need to call the returned function to access the original functionality
Key Differences between call() , apply() and bind() Methods :
Execution Timing:
- call() and apply() invoke the function immediately.
- bind() returns a new function without invoking it, allowing deferred execution.
Arguments Handling:
- call() accepts arguments as comma-separated values.
- apply() requires arguments as an array.
- bind() also uses comma-separated arguments, but these are pre-set for later when the function is invoked.
Return Value:
- call() and apply() return the result of the function call.
- bind() returns a new function with the specified this context.
Write down in the comment box your knowledge about the call(), apply(), and bind() methods.
This content originally appeared on DEV Community and was authored by Md Pervez Hossain
Md Pervez Hossain | Sciencx (2024-10-25T20:17:29+00:00) call() , apply() and bind() Method In JavaScript. Retrieved from https://www.scien.cx/2024/10/25/call-apply-and-bind-method-in-javascript/
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