2014/10/16 上午 12:02:43

jquery Programming Glossary: createcallback

http://stackoverflow.com/questions/4091765/assign-click-handlers-in-for-loop

to have some sort of callback function like this function createCallback i return function alert 'you clicked' i document .ready function..

Pass extra parameter to jQuery getJSON() success callback function

http://stackoverflow.com/questions/6129145/pass-extra-parameter-to-jquery-getjson-success-callback-function

separate function so you can see what's going on function createCallback item return function data do_something_with_data data item This.. function it will have the value as it was at the time the createCallback function was invoked. var title i l some_array.length for i.. i 0 i l i 1 title some_array i .getJSON 'some.url ' title createCallback i Note how this is not a reference to the createCallback function..

Assign click handlers in for loop

http://stackoverflow.com/questions/4091765/assign-click-handlers-in-for-loop

mistake to create closures in loops in Javascript. You need to have some sort of callback function like this function createCallback i return function alert 'you clicked' i document .ready function for var i 0 i 20 i '#question' i .click createCallback..

Pass extra parameter to jQuery getJSON() success callback function

http://stackoverflow.com/questions/6129145/pass-extra-parameter-to-jquery-getjson-success-callback-function

with the current value For clarity I'll break it out into a separate function so you can see what's going on function createCallback item return function data do_something_with_data data item This reference to the 'item' parameter creates a closure on it... the 'item' parameter creates a closure on it. In this inner function it will have the value as it was at the time the createCallback function was invoked. var title i l some_array.length for i 0 i l i 1 title some_array i .getJSON 'some.url ' title createCallback.. function was invoked. var title i l some_array.length for i 0 i l i 1 title some_array i .getJSON 'some.url ' title createCallback i Note how this is not a reference to the createCallback function but the value that createCallback returns which is itself..