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0.05是不是等于0
0.00是不是等于0
我是用parseinit。。。结果出问题了
JavaScript does not strictly distinguish between decimals and integers, so you can directly determine whether they are equal, but it is best to use ===而不是==. Three equal signs are strictly equal. You can search on Baidu for specific differences
===
==
......0.000 is of course equal to 0
Just use it===and it’ll be fine
0.000 === 0 // true 0.08 === 0 // false
You have to pay attention to the error in decimals. It is best to provide an accuracy judgment, such as Math.abs(a) < 0.0000001
Math.abs(a) < 0.0000001
Math.abs(0.1 + 0.2 - 0.3) < 0.0000001 // true 0.1 + 0.2 - 0.3 === 0 // false
parseint is converted to plastic. Think about it, what is 0.05 converted to plastic?
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
JavaScript does not strictly distinguish between decimals and integers, so you can directly determine whether they are equal, but it is best to use
===而不是==. Three equal signs are strictly equal. You can search on Baidu for specific differences......
0.000 is of course equal to 0
Just use it
===and it’ll be fineYou have to pay attention to the error in decimals. It is best to provide an accuracy judgment, such as
Math.abs(a) < 0.0000001parseint is converted to plastic. Think about it, what is 0.05 converted to plastic?