由网友(她又失约了)分享简介：我有下面的语句问题trace(Number("1/2")) //output NaN但trace(Number("1.2")) //output 1.2所以，我有点困惑，为什么第一个语句不给出正确的结果？So, I am bit confused as why the first statement doesn'...

我有下面的语句问题

trace(Number("1/2")) //output NaN

但

trace(Number("1.2")) //output 1.2

所以，我有点困惑，为什么第一个语句不给出正确的结果？

So, I am bit confused as why the first statement doesn't gives correct result?

推荐答案

这可能预计的值是一个数字已经，不是计算。尝试解析这个字符串：1 + 2。这将很可能导致NaN的为好。

It probably expects the value to be a number already, not a calculation. Try to parse this string: "1+2". It'll most likely result in NaN as well.

编辑：我已经运行测试

Number("1.2") = 1.2
Number("1+2") = NaN
Number("1/2") = NaN

因此​​，正如我说的，号（）构造函数使用数量，而不是计算。

So, as I said, the Number() constructor expects a number, not a calculation.