functionroundToTwoDecimal(num){returnMath.round(num*100)/100;}console.log(roundToTwoDecimal(3.14159));// 输出: 3.14console.log(roundToTwoDecimal(2.6789));// 输出: 2.68 1. 2. 3. 4. 5. 6. 在这个示例中,我们将数字先乘以100,使用Math.round()进行四舍五入,然后再除以100,从而实现了保留两位...
javascript function roundToTwoDecimals(num) { return Math.round(num * 100) / 100; } let number = 3.14159; let roundedNumber = roundToTwoDecimals(number); console.log(roundedNumber); // 输出: 3.14 2. 使用toFixed()方法 toFixed()方法可以将数字四舍五入为指定小数位数的字符串表示。如果只...
A small javascript library to round a number to dynamic decimal points This is to overcome a case in javascript toFixed() method which always have decimal points even if number is rounded off with no decimal point. e.g.2.toFixed(2) => 2.00 ...
通过乘除法组合实现: functionroundToDecimal(num, decimals) {constfactor =10** decimals;returnMath.round(num * factor) / factor; }console.log(roundToDecimal(3.14159,2));// 3.14 AI代码助手复制代码 2. 银行家舍入法(四舍六入五成双) 需自定义实现: functionbankersRound(num) {constrounded =Math...
ReactJs Round to two decimal places | JavaScript Example. We can use native JavaScript method to round to two or more places in React JS. Here we are going to create one example to use toFixed method to format the decimal numbers to 2 decimal places.
As I have shown some of the methods above, you can use one of the approaches to round – off a decimal number in javascript. You can also define your user-defined function to solve the above problem. At last one more extra point or a hint for you is the use ofMath.floor()andMath...
不像Sql中可以直接使用,javascript中没有。如果要实现需要另外写函数,如下三个函数可以实现。 function rounds(number, X) { // rounds number to X decimal places, defaults to 2 X = (!X ? 2 : X); return Math.round(number * Math.pow(10, X)) / Math.pow(10, X); } function roundd(v,...
1.使用toFixedorMath.round进行四舍五入&保留两位小数会有5不进1的情况 举个🌰,我在开发的过程中遇到了321201.595这个数字… 然后我想对他进行四舍五入 & 保留两位小数,一开始不太了解toFixed有那么多坑,所以直接用的.toFixed(2),结果如下: AI检测代码解析 ...
decimal.Ceiling(value*multiple):decimal.Floor(value*multiple))/multiple;}/// /// 靠近 0 向下舍入/// publicstaticdecimalRoundDown(thisdecimal value,sbyte digits){if(digits==0){return(value>=0?decimal.Floor(value):decimal.Ceiling(value));}decimal multiple=Convert.ToDecimal(Math.Pow(10,digits)...
console.log(roundToTwoDecimalPlaces(4.504)); // 输出 4.5 在这个例子中,我们首先将数字乘以100,然后使用Math.round()函数将其四舍五入到最接近的整数。最后,我们再将结果除以100,以恢复原始的小数位数。 总结 Math.round()函数是JavaScript中一个非常实用的函数,用于将数字四舍五入到最接近的整数。通过了解其...