js math.js 加减乘除 eval方式解决精度问题
太叔天宇
js math.js 解决 加减乘除 精度问题
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns = "http://www.w3.org/1999/xhtml">
<head>
<title></title>
<meta http-equiv = "Content-Type" content = "text/html; charset=utf-8" />
<script type = "text/javascript" src="math.js"></script>
<script type = "text/javascript">
console.log( 0.02 - 0.03 ); // -0.009999999999999998
console.log( 1 - 0.8 ); // 0.19999999999999996
console.log( 6 * 0.7 ); // 4.199999999999999
console.log( 0.1 + 0.2 ); // 0.30000000000000004
console.log( 0.1 + 0.7 ); // 0.7999999999999999
console.log( 1.2 / 0.2 ); // 5.999999999999999
// 使用 .eval() 高精度计算
math.config({
number: 'BigNumber',
precision: 20
});
//加
console.log(math.format(math.add(math.bignumber(0.1),math.bignumber(0.2)))) // 0.3
//减：
console.log( math.format(math.subtract(math.bignumber(0.02),math.bignumber(0.03))));
//乘：
console.log(math.format(math.multiply(math.bignumber(6),math.bignumber(0.7))));
//除：
console.log(math.format(math.divide(math.bignumber(1.2),math.bignumber(0.2))))
</script>
</head>
<body>
</body>
</html>
类似资料：