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在下面的代码中，我定义了 Greeter.prototype.isVeryPolite = function () {... 用于访问 this._isVeryPolite
greeter.isVeryPolite()
但是最后的“()”不是很友好。 javascript 中是否有技巧可以在不直接访问成员的情况下拥有 greeter.isVeryPolite？
https://jsfiddle.net/5r4so2Ld/
var Greeter = (function () {
function Greeter(message, flag) {
this._name = message;
this._isVeryPolite = flag;
}
Greeter.prototype.greet = function () {
if (this._isVeryPolite) {
return "How do you do, " + this._name;
}
else {
return "Hello " + this._name;
}
};
Greeter.prototype.isVeryPolite = function () {
return this._isVeryPolite;
};
return Greeter;
})();
var greeter = new Greeter("world", true);
var button = document.createElement('button');
button.textContent = "Say Hello";
button.onclick = function () {
alert(greeter.greet());
alert(greeter.isVeryPolite());
};
document.body.appendChild(button);