创建单个对象

发布于 2024-11-29 10:47:41 字数 169 浏览 2 评论 0原文

我想创建一个对象。下面的代码有意义吗？

singleObj = new function () {
    // act as a constructor.
};

我是否伤害了任何好的做法？

我需要一个构造函数。简单的对象文字在这里没有用。

原文

I want to create a single object. Does the below code make sense?

singleObj = new function () {
    // act as a constructor.
};

Am I hurting any good practice?

I need a constructor. A simple object literal would not be useful here.

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同展鸳鸯锦 2024-12-06 10:47:41

如果您只想要一个对象，因为您永远不会再创建一个对象，那么对象文字在这里就可以完美地工作。

var x = { };

会给你一个对象。
为了

var F = function() {
};

给你一个对象，你需要调用F

var x = new F();

If you want just a single object, in that you are never going to make one again, an object literal works perfectly here.

var x = { };

Will give you an object.
In order for

var F = function() {
};

to give you an object you will need to invoke F

var x = new F();

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尐籹人 2024-12-06 10:47:41

你可以尝试这样的事情：

var objCreate = function() {
    var obj = {};
    // do constructor logic
    return obj;
};

you could try someting like:

var objCreate = function() {
    var obj = {};
    // do constructor logic
    return obj;
};

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壹場煙雨 2024-12-06 10:47:41

只需创建一个新对象然后填充它即可。您不需要委托人来执行此操作。

var singleObject = {};
singleObject.value1 = "whatever";

如果你真的想使用一个函数，那么你需要实际调用它。

var singleObj = new (function () {
    // act as a constructor.
})();

我们可以通过创建一个匿名函数 function(){} 来使用自执行函数，并立即使用空参数集调用它。

Just create a new object and then populate it. You don't need a contrustor to do this.

var singleObject = {};
singleObject.value1 = "whatever";

If you really want to use a function, then you need to actually call it.

var singleObj = new (function () {
    // act as a constructor.
})();

We can use a self executing function by creating a anonymous function function(){}, and immediately calling it with an empty argument set.

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不再见 2024-12-06 10:47:41

http://www.w3schools.com/js/js_objects.asp

//Used to create an object
personObj=new Object();
personObj.firstname="John";
personObj.lastname="Doe";
personObj.age=50;
personObj.eyecolor="blue";

//Used as a constructor for the object
function person(firstname,lastname,age,eyecolor)
{
this.firstname=firstname;
this.lastname=lastname;
this.age=age;
this.eyecolor=eyecolor;
}
//how to declare objects via constructor template
var myFather=new person("John","Doe",50,"blue");
var myMother=new person("Sally","Rally",48,"green");

http://www.w3schools.com/js/js_objects.asp

//Used to create an object
personObj=new Object();
personObj.firstname="John";
personObj.lastname="Doe";
personObj.age=50;
personObj.eyecolor="blue";

//Used as a constructor for the object
function person(firstname,lastname,age,eyecolor)
{
this.firstname=firstname;
this.lastname=lastname;
this.age=age;
this.eyecolor=eyecolor;
}
//how to declare objects via constructor template
var myFather=new person("John","Doe",50,"blue");
var myMother=new person("Sally","Rally",48,"green");

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