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.
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