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下表列出了可用的运算符。 对于每个运算符,给出了一个使用文字值以及单元格引用的语法的示例。 对于每种类型的运算符,都给出了返回值的类型。
运算符类型 | 语法范例 | 结果 | ||
---|---|---|---|---|
运算符 | 描述 | Literal & Literal | Cell Ref & Literal | 返回类型 |
二元运算符 | ||||
+ | Add | 5 + 3 | A1 + 3 | double |
– | Subtract | 5 – 3 | A1 – 3 | double |
* | Multiply | 5 * 3 | A1 * 3 | double |
/ | Divide | 5 / 3 | A1 / 3 | double |
^ | Exponent | 5 ^ 3 | A1 ^ 3 | double |
& | Concatenate | "F" & "p" | A1 & "p" | string |
= | Equal | A1 <> 3 | boolean | |
< > | Not Equal | A1 = 3 | boolean | |
< | Less Than | A1 <3 | boolean | |
> | Greater Than | A1 > 3 | boolean | |
<= | Less Than Or Equal | A1 <= 3 | boolean | |
>= | Greater Than Or Equal | A1 >= 3 | boolean | |
一元运算符 | ||||
- | Negate | -(5/3) | -(A1/3) | double |
+ | Plus | +(5/3) | +(A1/3) | double |
% | Percent | (5/3)% | (A1/3)% | double |
运算符指定要对公式的元素执行的计算类型。 大多数运算符为数学运算返回双精度浮点值,为比较运算符返回布尔(或逻辑)值。
在SpreadJS中,所有算术运算符(包括一元+)都会检查其参数,如果任何参数是无法转换为数字的字符串,则返回#VALUE错误。 这是数学上正确的行为,不能被覆盖。 例如,三个公式+B5和0 +B5和--B5都应产生相同的结果,并且在SpreadJS中,它们确实可以产生相同的结果。
有关运算符的更多信息,请参见优先顺序与带有日期和时间的运算符。