For循环

最后更新于:2022-04-01 10:48:50

## 问题 你需要使用一个for循环来迭代一个数组、对象或者值域。 ## 方法 ~~~ # for(i = 1; i<= 10; i++) x for x in [1..10] # => [ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ] # To count by 2 # for(i=1; i<= 10; i=i+2) x for x in [1..10] by 2 # => [ 1, 3, 5, 7, 9 ] # Perform a simple operation like squaring each item. x * x for x in [1..10] # = > [1,4,9,16,25,36,49,64,81,100] ~~~ ## 详解 在CoffeeScript中,可以使用列表解析(List Comprehensions)代替for循环,但最终编译为JavaScript时,还是传统的for循环。
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