if..else vs if（）{return}

问题描述

在下面的例子中 - 假设返回值没有任何重要性 - 是否有理由偏向另一种方法？

In the following example - given that the return value isn't of any importance - is there a reason to prefer either method over the other?

// Method 1
function (a, b) {
  if (a == b){
    // I'm just interested in
    // the stuff happening here
  } else {
    // or here
  }
return true;
}

// Method 2
function (a, b) {
  if (a == b){
    // I'm just interested in
    // the stuff happening here
    return true;
  }
  // or here
  return true;
}

推荐答案

这似乎是最佳做法（主要是我工作过的地方）是在方法或函数的顶部设置默认值，只有在出现某些条件时才更改这些值。因此，不需要使用else，因此方法2是优选的。

It seems that best practices (mostly by places I've worked for) is to set default values at the top of a method or function and only change those values if some condition occurs. Thus, the use of else is not needed so Method 2 is preferred.

由于示例是JavaScript，因此需要特别注意代码大小。所以方法2会为相同的功能创建更少的代码，进一步将其参数作为首选。

Since the example is JavaScript, special attention needs to be paid in regards to code size. So Method 2 would create less code for the same functionality, furthering its argument as the preferred.

但是，如果你有超过2个可能的条件，则为else或者if无法避免。但是，在这些情况下，我工作的大多数地方都更喜欢Switch Case。

However, if you have more than 2 possible conditions, an else or else if cannot be avoided. However, most places I've worked prefer a Switch Case in these situations.

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