是否有任何解决方案来获得一个对象的函数名?
function alertClassOrObject (o) {
window.alert(o.objectName); //"myObj" OR "myClass" as a String
}
function myClass () {
this.foo = function () {
alertClassOrObject(this);
}
}
var myObj = new myClass();
myObj.foo();
对于(var k in this){…} -没有关于className或ObjectName的信息。有可能弄到一个吗?
当前回答
如果你使用标准的IIFE(例如TypeScript)
var Zamboch;
(function (_Zamboch) {
(function (Web) {
(function (Common) {
var App = (function () {
function App() {
}
App.prototype.hello = function () {
console.log('Hello App');
};
return App;
})();
Common.App = App;
})(Web.Common || (Web.Common = {}));
var Common = Web.Common;
})(_Zamboch.Web || (_Zamboch.Web = {}));
var Web = _Zamboch.Web;
})(Zamboch || (Zamboch = {}));
您可以在原型之前注释
setupReflection(Zamboch, 'Zamboch', 'Zamboch');
然后使用_fullname和_classname字段。
var app=new Zamboch.Web.Common.App();
console.log(app._fullname);
注释函数:
function setupReflection(ns, fullname, name) {
// I have only classes and namespaces starting with capital letter
if (name[0] >= 'A' && name[0] <= 'Z') {
var type = typeof ns;
if (type == 'object') {
ns._refmark = ns._refmark || 0;
ns._fullname = fullname;
var keys = Object.keys(ns);
if (keys.length != ns._refmark) {
// set marker to avoid recusion, just in case
ns._refmark = keys.length;
for (var nested in ns) {
var nestedvalue = ns[nested];
setupReflection(nestedvalue, fullname + '.' + nested, nested);
}
}
} else if (type == 'function' && ns.prototype) {
ns._fullname = fullname;
ns._classname = name;
ns.prototype._fullname = fullname;
ns.prototype._classname = name;
}
}
}
小提琴
其他回答
如果你使用标准的IIFE(例如TypeScript)
var Zamboch;
(function (_Zamboch) {
(function (Web) {
(function (Common) {
var App = (function () {
function App() {
}
App.prototype.hello = function () {
console.log('Hello App');
};
return App;
})();
Common.App = App;
})(Web.Common || (Web.Common = {}));
var Common = Web.Common;
})(_Zamboch.Web || (_Zamboch.Web = {}));
var Web = _Zamboch.Web;
})(Zamboch || (Zamboch = {}));
您可以在原型之前注释
setupReflection(Zamboch, 'Zamboch', 'Zamboch');
然后使用_fullname和_classname字段。
var app=new Zamboch.Web.Common.App();
console.log(app._fullname);
注释函数:
function setupReflection(ns, fullname, name) {
// I have only classes and namespaces starting with capital letter
if (name[0] >= 'A' && name[0] <= 'Z') {
var type = typeof ns;
if (type == 'object') {
ns._refmark = ns._refmark || 0;
ns._fullname = fullname;
var keys = Object.keys(ns);
if (keys.length != ns._refmark) {
// set marker to avoid recusion, just in case
ns._refmark = keys.length;
for (var nested in ns) {
var nestedvalue = ns[nested];
setupReflection(nestedvalue, fullname + '.' + nested, nested);
}
}
} else if (type == 'function' && ns.prototype) {
ns._fullname = fullname;
ns._classname = name;
ns.prototype._fullname = fullname;
ns.prototype._classname = name;
}
}
}
小提琴
例子:
function Foo () { console.log('Foo function'); } var f = new Foo(); console.log('f', f.constructor.name); // -> "Foo" var Bar = function () { console.log('Anonymous function (as Bar)'); }; var b = new Bar(); console.log('b', b.constructor.name); // -> "Bar" var Abc = function Xyz() { console.log('Xyz function (as Abc)'); }; var a = new Abc(); console.log('a', a.constructor.name); // -> "Xyz" class Clazz { constructor() { console.log('Clazz class'); } } var c = new Clazz(); console.log('c', c.constructor.name); // -> "Clazz" var otherClass = class Cla2 { constructor() { console.log('Cla2 class (as otherClass)'); } } var c2 = new otherClass(); console.log('c2', c2.constructor.name); // -> "Cla2"
获取对象的构造函数，然后检查它的name属性。
myObj.constructor.name
myClass”了。
试试这个:
var classname = ("" + obj.constructor).split("function ")[1].split("(")[0];
我们需要的是:
在函数中封装一个常量(函数的名称等于我们想要获取的对象的名称) 在对象中使用箭头函数
console.clear (); function App(){//我的常量的名字是App 返回{ 答:{ b: { C:()=>{//这里很重要，使用箭头函数 console.log (this.constructor.name) ｝ ｝ ｝ ｝ ｝ const obj = new App();/ /使用 obj.a.b.c ();/ /应用程序 //使用react道具等 //例如，我们想把这个回调函数传递给某个组件 const myComponent = {}; myComponent。customProps = obj.a.b.c; myComponent.customProps ();/ /应用程序
