不将新对象分配给变量是不好的做法吗? [英] Is it bad practice to not assign a new object to a variable?

问题描述

如果您永远不会访问变量，则不将新创建的对象分配给变量是不好的JavaScript做法吗?

Is it bad javascript practice to not assign a newly created object to a variable if you're never going to access it?

例如:

for(var i=0;i<links.length;i++){
    new objectName(links[i]);
}

同样，我不会访问它，因此不需要变量来引用它.

And again, I won't be accessing it, so there's no need for a variable to reference it.

推荐答案

如果您不访问它，但它仍然有用，则表明构造函数本身具有明显的副作用.一般来说，这是个坏主意.

If you're not accessing it but it's still useful, that suggests that the constructor itself has visible side effects. Generally speaking, that's a bad idea.

如果您根本不调用构造函数，将会发生什么变化?

What would change if you didn't call the constructor at all?

如果您的构造函数对全局状态有所影响，那会让我感到非常糟糕.另一方面，您可以仅出于验证目的而使用它-即，如果构造函数返回而没有引发异常，则可以.并不是很糟糕，但是如果是这样的话，一种单独的验证方法将使事情变得更加清晰.

If your constructor is doing something to the global state, that strikes me as very bad. On the other hand, you could be using it just for the sake of validation - i.e. if the constructor returns without throwing an exception, it's okay. That's not quite so bad, but a separate method for validation would make things a lot clearer if that's the case.

这篇关于不将新对象分配给变量是不好的做法吗?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！