用js编写干净的代码

Keep functions small.(Preferably < 30, but never more than 50).

保持函数较小(最好<30，但不要超过50)。 Concise use of if/else. Keep the if/else depth to max of 2 levels.

简明地使用if / else。 保持if / else深度最大为2级。 Concise use of try/catch. try/catch should be first statement in function.

简洁地使用try / catch。 try / catch应该是函数中的第一条语句。 Use forEach/map/reduce/flatMap(chain)/transduce etc. while looping arrays. Avoid for loops until necessary.

在循环数组时使用forEach / map / reduce / flatMap(chain)/ transduc等。 除非有必要，否则避免循环。

Avoid unnecessary promise wrapping. Understand Promise “then”, it acts like ‘map’ on scalar values and ‘flatMap’ on wrapped promises. e.g Promise.resolve(1)

避免不必要的承诺包装。 了解Promise“ then”，它的作用就像在标量值上的“ map”，在包装的Promise上的“ flatMap”。 例如Promise.resolve(1)

.then(a => a * 2) // a = 1 here, acts like map

.then(a => a * 2)// a = 1，就像地图

.then(a => Promise.resolve(a * 2)) // a = 2, acts like flatMap.

.then(a => Promise.resolve(a * 2))// a = 2，作用类似于flatMap。

.then(a => console.log(a)) // a = 4

.then(a => console.log(a))// a = 4

Practice KISS(Keep it simple stupid), DRY(Don’t repeat yourself) and YAGNI(You aint gonna need it).

练习KISS(保持简单愚蠢)，DRY(不要重复自己)和YAGNI(您不会需要它)。

Keep Patience. It took time to learn things. https://www.norvig.com/21-days.html

保持耐心。 花时间学习东西。 https://www.norvig.com/21-days.html

Read Pragmatic Programmer and Clean Code.

阅读实用程序员和清洁代码 。

翻译自: https://medium.com/@shiningsandy/writing-clean-code-in-js-b8535c108fc4

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