resolve() and reject()
Call deferred.resolve(value) to signal success and deferred.reject(reason) to signal failure. Once either is called, the state is fixed.
jQuery
Intermediate
3 min read
resolve() and reject()
Example
function waitFor(ms) {
const dfd = $.Deferred();
setTimeout(function() {
dfd.resolve(ms + "ms elapsed");
}, ms);
return dfd.promise();
}
waitFor(2000).done(function(msg) {
console.log(msg); // "2000ms elapsed"
}); Pro Tip
A Deferred can only be resolved or rejected once — subsequent calls are ignored.