A function created in JavaScript inherits all the methods from its prototype which is Function.prototype (you can check all the methods of the Function.prototype by typing the same in any JS console)
Call, apply and bind are some of them . Let’s see what these are
1. Bind
The Bind method is used to set the ‘this’ of the function to the mentioned object.
Also, bind method creates a new copy of the previous function and doesn’t execute right away.
Bind method also takes parameters which can be passed to the functions. The execution of a function using bind and passing parameters can be seen below
2. Call
Similar to Bind, Call method of a function is also used to set the value of ‘this’ to the function that is being executed.
The major difference between call and bind methods is that while bind method creates a new copy of the function and doesn’t get executed immediately, the call method do not create a new copy of the function and executes immediately
As you can see above, there is no need to execute the weather variable again to see the function execution. This is done automatically if we use call method, unlike the bind
Similar to bind method, call method also takes in parameters. If there are multiple parameters, they should be separated using commas
3. Apply
Apply method of the function is almost identical to Call method. The only difference between call and apply method is in Call method we send the parameters as comma separated values whereas in Apply we send all the parameters in the form of an array
Apply method also do not create a new copy of the function and executes the function immediately, similar to the call method
Thanks for reading. Have a good day 😃 👋
