标签: javascript
我们说我们有3个变量
var a = 0.1 var b = 0.2 var c = 0.3
(a + b) + c为什么0.6000000000000001和a + (b + c)给出0.6?
(a + b) + c
0.6000000000000001
a + (b + c)
0.6