Do jQuery functions return a value like Javascript? How?

In Javascript we can declare a variable and we can call a function. The function will return a value and will be assigned to the variable. Is this possible in jQuery?

I want to know if my previous function is finished or not. I want 开发者_StackOverflow中文版to get the result success or failure and call another function based on first function's result

I use a function setTimeout for blockUI.

How can I check if that timeout is due to another function?

Do .val or $.get work for the above purposes?

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UPDATE: Based on your comments...

First question:

You should probably look at some of the blockUI demos.

It looks like blockUI has a callback onBlock: that calls a function after the fadeIn is done.

onBlock: function() { 
   alert('Page is now blocked; fadeIn complete'); 
}

Second question:

jQuery is just a library of javascript code, therefore you can assign functions to variables the same way you always do.

var a = function dosome() {
    // do something
};

a(); // call the function

Third question:

You mean you want to redirect after the 3000ms fadeIn of the blockUI? You would do it in the callback that I pointed out under question 1 above. But of course this will make the entire page change, including the blockUI.

window.location = "http://somedomain.com/some/path";

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Some clarification in your question is needed.

It sounds like you have a function that sets a setTimeout() for some purpose, and that function is reused, so you need to reference the correct instance of setTimeout().

If so, you can have your function return the setTimeout() instance, and use that reference to clear it if needed.

function unblockUI(dur) {
    return setTimeout(function() {
        $.unblockUI();
    }, dur);
}

var someTimeout = unblockUI(1000);
clear(someTimeout);

var someOtherTimeout = unblockUI(1000);
clear(someOtherTimeout);

Is this close to what you're asking?