functionroundToTwoDecimals(num){returnMath.round(num*100)/100;}constaccurateResult=roundToTwoDecimals(0.1+0.2);console.log(accurateResult);// 输出: 0.3 1. 2. 3. 4. 5. 6. 数据转换的时序图演示 以下是将整数转换为双精度浮点数的简单时序图,演示了这个过程的顺序。 JavaScriptEngineUserJavaScriptEn...
// 获取小数位数function getDecimalCount(num) { let count; try { count = num.toString().split('.')[1].length; } catch(e) { count = 0; } return count;}// 加法 - 修复精度function decimalAdd(num1, num2) { if (!isNum(num1) || !isNum(num2)) return;...
*/functionconvertIntegerToDecimal(integer,decimalPlaces){if(decimalPlaces<0){thrownewError("小数位数不能为负数");}constfactor=Math.pow(10,decimalPlaces);returnMath.round(integer*factor)/factor;}// 示例console.log(convertIntegerToDecimal(123,2));// 输出: 1.23console.log(convertIntegerToDecimal(456...
英文| https://codingbeauty.medium.com/javascript-round-number-to-2-decimal-places-3537ad0736f7 要在 JavaScript...中将数字四舍五入到小数点后两位,请对数字调用 toFixed() 方法,即 num.toFixed(2)。...toFixed() 会将数字四舍五入并将其格式化为小数点后两位。...例如: JavaScript const num = ...
如果那个方法不适用于你,那么有 parseInt、一元加号、带有floor 的 parseFloat 和Math.round 方法可供使用。 parseInt() var x = parseInt("1000", 10); // You want to use radix 10 // So you get a decimal number even with a leading 0 and an old browser ([IE8, Firefox 20, Chrome 22 and...
英文| https://codingbeauty.medium.com/javascript-round-number-to-2-decimal-places-3537ad0736f7 要在JavaScript 中将数字四舍五入到小数点后两位,请对数字调用 toFixed() 方法,即 num.toFixed(2)。toFixed() 会将数字四舍五入并将其格式化为小数点后两位。
How to Round to Two Decimal Places Using Math.round() To round to two decimal places in JavaScript, you can use a combination of multiplication and the Math.round() function. We have to do it this way since Math.round() only takes one argument - you can't specify what decimal place ...
In most cases JavaScript developers using Math.round() or toFixed() for rounded to the nearest integer. But, it seems like Math.round() is a better solution, but it is not! In some cases it will NOT round correctly.
In this post, we will see how to round to 2 decimal places in javascript. Using Math.Round() to Round to 2 Decimal Places in JavaScript You can use Math.round() function to round number to 2 decimal places in javascript. You need to multiply number by 100, apply Math.round() and ...
Number(Math.round(1.005+'e2')+'e-2');// 1.01 And to abstract that into something more usable: functionround(value, decimals){returnNumber(Math.round(value+'e'+decimals)+'e-'+decimals); } round(1.005,2);// 1.01