//
var StateJS;
// function
(function (StateJS) {
var Behavior = (function () {
//
function Behavior(behavior) {
this.actions = [];
if (behavior) {
this.push(behavior); // NOTE: this ensures a copy of the array is made
}
}
//
Behavior.prototype.push = function (behavior) {
Array.prototype.push.apply(this.actions, behavior instanceof Behavior ? behavior.actions : arguments);
return this;
};
/**
* Tests the Behavior instance to see if any actions have been defined.
* @method hasActions
* @returns {boolean} True if there are actions defined within this Behavior instance.
*/
Behavior.prototype.hasActions = function () {
return this.actions.length !== 0;
};
Behavior.prototype.invoke = function (message, instance, history) {
if (history === void 0) { history = false; }
this.actions.forEach(function (action) { return action(message, instance, history); });
};
// var Behavior =
return Behavior;
})();
// StateJS
StateJS.Behavior = Behavior;
// StateJS StateJS {}
})(StateJS || (StateJS = {})); see the above code on the Internet, the above definition constructor can be written in the following form, I have never seen this kind of writing before, who can explain it.
function Behavior (behavior) {
this.actions = [];
if (behavior) {
this.push(behavior); // NOTE: this ensures a copy of the array is made
}
}-sharp-sharp-sharp
the environmental background of the problems and what methods you have tried
related codes
/ / Please paste the code text below (do not replace the code with pictures)