删除多个对象属性? [英] Delete multiple object properties?

问题描述

我创建了一个具有多个属性的对象-

I create an object with multiple properties -

var objOpts = {
  option1: 'Option1',
  option2: 'Option2',
  option2: 'Option3'
};

然后我在稍后添加更多属性-

I then add some more properties later on -

objOpts.option4 = 'Option4'
objOpts.option5 = 'Option5'

然后我完成了后两个创建的属性('Option4'和'Option5')，并且我想清除/删除这两个属性.

I'm then done with the two latter created properties ('Option4' & 'Option5') and I want to clear/delete both.

目前，我会这样做-

delete objOpts.option4
delete objOpts.option5

还有另一种方法可以做到这一点吗?想象一下，我又添加了5个属性，并且需要清除/删除它们，而这将是五行几乎相同的删除"代码

Is there another way to go about doing this? Imagine I'd added 5 more properties and needed to clear/delete them all that'd be five lines of almost identical 'delete' code

推荐答案

我确定您正在尝试向对象添加自定义属性.

I'm sure you are trying to add custom properties to an object.

我建议的一种更简单的方法是创建一个子属性:

A simpler way I would suggest is by creating a sub property:

objOpts.custom.option4 = 'Option4'
objOpts.custom.option5 = 'Option5'

这样，您可以删除objOpts.custom 并完成它.请注意，在此步骤之后，您将必须重新创建 objOpts.custom = {} .

this way you could delete objOpts.custom and get done with it. Note that after this step you would have to recreate objOpts.custom = {}.

此外，由于您的公共财产很容易与私人财产区分开来，因此这种方式也更接近OOP.

Moreover this way would also feel closer to OOP, since your public properties would easily be distinguishable from private ones.

如果您开始删除JavaScript中的对象，那么我想指向一篇有关该主题的出色文章:

If you are beginning with deleting objects in JavaScript, I'd like to point to to an excellently written article on the topic: http://perfectionkills.com/understanding-delete/

您可以尝试使用元属性，以防止属性被删除等(为您的案例创建更好的编码流程)

You could play around with the meta properties which allow you to protect properties from being deleted etc. (to create an even better coding flow for your case)

我想添加该内容，而不是删除并重新创建该属性，您只需说出 objOpts.custom = {} 即可释放 option4 和 option5 从内存中(最终通过垃圾回收).

I'd like to add that instead of deleting and recreating the property, you could simply say objOpts.custom = {} which would release the option4 and option5 from memory (eventually, via Garbage Collection).

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