在 Javascript 中声明空对象属性的简写有吗？

发布于 2024-11-08 13:19:02 字数 293 浏览 0 评论 0原文

我需要在脚本中声明很多对象属性，我想知道是否有任何方法可以缩短它：

Core.registry.taskItemSelected;
Core.registry.taskItemSelected.id;
Core.registry.taskItemSelected.name;
Core.registry.taskItemSelected.parent;
Core.registry.taskItemSelected.summary;
Core.registry.taskItemSelected.description;

原文

I need to declare a lot of object properties in my script and I wonder if the're any way to shorten this:

Core.registry.taskItemSelected;
Core.registry.taskItemSelected.id;
Core.registry.taskItemSelected.name;
Core.registry.taskItemSelected.parent;
Core.registry.taskItemSelected.summary;
Core.registry.taskItemSelected.description;

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在风中等你 2024-11-15 13:19:02

那行不通？

Core.registry.taskItemSelected = {
  id: null,
  name: null,
  parent: null,
  ...
};

Wouldn't that work?

Core.registry.taskItemSelected = {
  id: null,
  name: null,
  parent: null,
  ...
};

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铃予 2024-11-15 13:19:02

像这样的东西应该有效：

var props = ["id", "name", "parent", ...];
Core.registry.taskItemSelected = {};
for (var i = 0; i < props.length; i++)
   Core.registry.taskItemSelected[props[i]] = "";

编辑：按照OP评论，这里是具有相同最终结果的更好版本：

Object.prototype.declare = function (varArray) {
    for (var i = 0; i < varArray.length; i++) {
        this[varArray[i]] = {};
    }
};

//usage:
var props = ["id", "name", "parent"];
Core = {};
Core.declare(props);

还有实时测试用例： http://jsfiddle.net/5fRDc/

Something like this should work:

var props = ["id", "name", "parent", ...];
Core.registry.taskItemSelected = {};
for (var i = 0; i < props.length; i++)
   Core.registry.taskItemSelected[props[i]] = "";

Edit: following the OP comments, here is better version with same final result:

Object.prototype.declare = function (varArray) {
    for (var i = 0; i < varArray.length; i++) {
        this[varArray[i]] = {};
    }
};

//usage:
var props = ["id", "name", "parent"];
Core = {};
Core.declare(props);

And live test case as well: http://jsfiddle.net/5fRDc/

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~没有更多了~