jQuery函数是否返回像Javascript这样的值？ 怎么样？

Question

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 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?

Answer 1

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";

---

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?