I feel like this function will cause more problems than it's supposed to solve. Here is why:

A function should do a specific task, that is self descriptive by the function name. Having a function that does a lot of different things depending on it's parameters is not easy to use and read.

Unfortunately toggleClick does not do what it says, and it uses up brain matter every time you have to use it.

If I somehow ended up having to work with this code i'd have to run the if statements in my head before writing them as parameters to the function.

If the user clicks the first element, I should toggle the third child of that element, but only if this variable is TRUE, otherwise the parent itself should toggle instead 

If I had to use something like this, it is such a specific use case that I'd propably write the code I just thought about, instead of trying to figure out what this function does.

What I'd do:

If I can edit the markup, or the interacting elements are not decided dynamically, I'd set IDs to the elements I want to interact and do a simple

$('#myelement').on('click', function(){ $('#target_element').toggle(); }); 

It might be 3 lines long, but you know what it does the moment you read it. If you want to mimic the use of your toggleClick you can try this instead:

// When I click the 2nd child of #my_element... $('#my_element :eq(0)').on('click', function(){ // Toggle the fifth child of the #target_element $('#target_element :eq(4)').toggle(); }); 

I feel like this function will cause more problems than it's supposed to solve. Here is why:

A function should do a specific task, that is self descriptive by the function name. Having a function that does a lot of different things depending on it's parameters is not easy to use and read.

Unfortunately toggleClick does not do what it says, and it uses up brain matter every time you have to use it.

If I somehow ended up having to work with this code i'd have to run the if statements in my head before writing them as parameters to the function.

If the user clicks the first element, I should toggle the third child of that element,
but only if this variable is TRUE, otherwise the parent itself should toggle instead

If I had to use something like this, it is such a specific use case that I'd propably write the code I just thought about, instead of trying to figure out what this function does.

What I'd do:

If I can edit the markup, or the interacting elements are not decided dynamically, I'd set IDs to the elements I want to interact and do a simple

$('#myelement').on('click', function(){ $('#target_element').toggle(); }); 

It might be 3 lines long, but you know what it does the moment you read it. If you want to mimic the use of your toggleClick you can try this instead:

// When I click the 2nd child of #my_element... $('#my_element :eq(0)').on('click', function(){ // Toggle the fifth child of the #target_element $('#target_element :eq(4)').toggle(); });