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Home > Web Front-end > HTML Tutorial > JS的乘积与运算精度_html/css_WEB-ITnose

JS的乘积与运算精度_html/css_WEB-ITnose

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Release： 2016-06-21 09:33:33
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<html><head><meta http-equiv="Content-Type" content="text/html; charset=gb2312" /><title>无标题文档</title></head><body><script language="javascript">alert(3*2.7);</script></body></html>
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为什么会弹出8.100000000001？
如何避免这种情况？

如果是3*8这样的整数运算，如何输出结果为24.00这样的格式？


回复讨论(解决方案)

numObj.toFixed(2)

js里的数字全部是浮点数，而浮点数的计算误差是不可避免的

非常感谢
把自己的运算结果加上.toFixed(2)就好了

Related labels：
JS的乘积与运算精度
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