请教一个JavaScript浮点数的问题

问题描述

问 题

我尝试将小数乘以倍数来修复浮点数的bug：

Math.plus = (...numbers) => {
    return numbers.reduce((acc,cur) => (acc * 1000 + cur * 1000) / 1000);    
};

但发现有的数能计算正确，有的还是会出现浮点数bug：

console.log(Math.plus(16.141,0.016));    //16.156999999999996

console.log(Math.plus(16.201,0.016));    //16.217

console.log ( (16141 + 16) / 1000 );    //16.157

请问如何解决这个问题呢？

解决方案

Math.plus = (...numbers) => {
    return numbers.reduce((acc,cur) => (acc + cur).toFixed(3));    
};
console.log(Math.plus(16.141,0.016));    //16.157
console.log(Math.plus(16.201,0.016));    //16.217
console.log ( (16141 + 16) / 1000 );    //16.157

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