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...
*/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...
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...
resizeTo() Resizes the window to the specified width and height Window return Stops the execution of a function and returns a value from that function Statements reverse() Reverses the order of the elements in an array Array round() Rounds x to the nearest integer Math pow() Returns the ...
Another way to round to two decimal places in JavaScript is to use theNumber.toFixed()method. This method converts a number into a string, rounding to a specified number of decimal places. letnum =3.14159;letroundedNum =Number(num.toFixed(2));console.log(roundedNum);// Output: 3.14 ...
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.
// 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;...
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。
Description TheMath.trunc()method returns the integer part of a number. TheMath.trunc()method removes the decimals (does NOT round the number). JavaScript Rounding Functions The Math.abs() Method The Math.ceil() Method The Math.floor() Method ...
let integer = parseInt(string); console.log(integer); // Output: 10 As you can notice, no matter what digit you put in, the output will always be the number with all of the digits after the decimal point. parseInt()method is the easiest one to use to convert a string to an integer...