主题
range
js
_.range([start=0], end, [step=1])
创建一个数字数组(正数和/或负数),从 start
递增到 end
(但不包括 end
)。如果指定了负 start
而没有 end
或 step
,则使用 -1
的步骤。如果未指定 end
,则将其设置为 start
和 start
,然后设置为 0
。
¥Creates an array of numbers (positive and/or negative) progressing from start
up to, but not including, end
. A step of -1
is used if a negative start
is specified without an end
or step
. If end
is not specified, it's set to start
with start
then set to 0
.
注意:JavaScript 遵循 IEEE-754 标准来解析可能产生意外结果的浮点值。
¥Note: JavaScript follows the IEEE-754 standard for resolving floating-point values which can produce unexpected results.
新增于
¥Since
0.1.0
参数
¥Arguments
[start=0]
(数值):范围的开始。¥
[start=0]
(number): The start of the range.end
(数值):范围的末尾。¥
end
(number): The end of the range.[step=1]
(数值):要增加或减少的值。¥
[step=1]
(number): The value to increment or decrement by.
返回
¥Returns
(数组):返回数字范围。
¥(Array): Returns the range of numbers.
示例
¥Example
js
_.range(4);
// => [0, 1, 2, 3]
_.range(-4);
// => [0, -1, -2, -3]
_.range(1, 5);
// => [1, 2, 3, 4]
_.range(0, 20, 5);
// => [0, 5, 10, 15]
_.range(0, -4, -1);
// => [0, -1, -2, -3]
_.range(1, 4, 0);
// => [1, 1, 1]
_.range(0);
// => []