How to make setTimeout in JavaScript support chain operations_javascript skills

The modification is very simple, judge by the parameters, and then return the promise object

Copy code The code is as follows:

(function() {
var timeout = setTimeout;
window.setTimeout = function(fn, time) {
If (!time) {
Time = fn;
Return $.Deferred(function(dfd) {
timeout(function() {
            dfd.resolvel(dfd);
         }, time);
}).promise();
}
Timeout.apply(window, arguments);
}
})();

Call

Copy code The code is as follows:

setTimeout(1000).done(function(dnt) {
console.log(dnt)
})