Hi, Is javascript closure different from closure of the other languages? Thanks for explaining things and the article you shared.
james On Jul 12, 10:03 am, Eric Crull <[EMAIL PROTECTED]> wrote: > The first example is a closure. It only operates when the $.post > function is completed. If you just tried to use the alert(data) as > you have in the second example it would execute right away. > > A closure is the equivalent to burying a time-capsule in the ground to > be dug up later. You could leave the box open and the stuff in it > lying around, but then it wouldn't be valuable, would it? > > What you do is close the box up and put it away until the time is > right to look inside it. Then when the time comes (after the $.post), > it is dug up and the contents examined. > > Try reading this, it's accessible and the examples are fairly easy to > understand... > > http://blog.morrisjohns.com/javascript_closures_for_dummies > > Don't worry if you don't get it right away, that just means you're a > mere mortal. > > Eric > > On Jul 11, 9:40 pm, james_027 <[EMAIL PROTECTED]> wrote: > > > Hi, > > > I am using $.post() function, I don't understand what is callback > > function ... > > > what is the difference between > > > $.post('test.cgi', params, > > function(data) { > > alert(data); > > } > > ); > > > and > > > $.post('test.cgi', params, alert(data)); > > > the data being shown is different. and I don't seem to understand what > > is the difference in function(data) {alert(data);} from alert(data). > > For me function(data) {alert(data);} is just a function taking the > > data and just passing it to the alert(). Is function() inside the > > $.post something special? where does the data come from? are the data > > in the function(data) {alert(data);} and alert(data) different? > > > Thanks > > james
