come across an example, I think about it over and over again, but I don"t understand:
function A() {
var deferred = $.Deferred();
setTimeout(function() {
console.log( "A return." );
deferred.resolve("A return!");
}, 1000);
return deferred.promise();
}
function B() {
var deferred = $.Deferred();
setTimeout(function() {
console.log( "B return." );
deferred.resolve( "B return!");
}, 2000);
return deferred.promise();
}
function C() {
console.log( "C return." );
}
//,
$.when( A() ).then( B ).then( C );
//:
A return.
B return.
C return.
//,
$.when( A() ).then( B() ).then( C() );
//:
C return.
A return.
B return.just rewrote B-> B (), C-> C (), doesn"t seem to make any difference. Why is the output different?