/** * 精确加法 */function add(num1, num2) { const num1Digits = (num1.toString().split('.')[1] || '').length; const num2Digits = (num2.toString().split('.')[1] || '').length; const baseNum = Math.pow(10, Math.max(num1Digits, num2Digits)); return (num1 * ...
在这种情况下,我们首先需要使用 parseFloat() 函数将数字转换为浮点数,然后再使用 toFixed() 将其四舍五入到小数点后两位。 例如: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 constnumStr='17.23593';// 👇 convert string to float with parseFloat()constnum=parseFloat(numStr);constresult=num.to...
4、decimal.Round(decimal.Parse("0.3333333"),2) 5、private System.Globalization.NumberFormatInfo nfi = new System.Globalization.NumberFormatInfo(); float test=0.333333f; nfi.NumberDecimalDigits=2; string result=test.ToString("N", nfi); 6、string result= String.Format("{0:N2}",Convert.ToDecimal...
To round a number to 2 decimal places in JavaScript, you can create a custom function. Instead of using Number.toFixed(), which can be used to round a number to 2 decimal places, you can write a more generic custom function. This function can be used to round any number to the desir...
// return Math.round(num * 100) / 100;} let num = 123.456789;let formattedNum = formatTo...
* @param b {number} 运算数2 * @param digits {number} 精度,保留的小数点数,比如 2, 即保留为两位小数 * @param op {string} 运算类型,有加减乘除(add/subtract/multiply/divide) * */ function operation(a, b, digits, op) { var o1 = toInteger(a) ...
but when you give ‘x=2’ into the function then, it rounds the number to 2 decimal places. NOTE – toFixed(x) function – Always first typecast the given decimal number(float value) into a string. Then round the number to x decimal places. Hence, the data type of result will be ...
}functiondivide(a, b, digits) {returnoperation(a, b, digits,'divide') }// exportsreturn{ add, subtract, multiply, divide } }(); floatObj.add(0.1,0.2,3)//0.3floatObj.add(1.1,0.11);//1.21floatObj.multiply(19.9,100)//1990 3.toFixed的修复 ...
// Operators act on values (the operands) to produce a new value.// Arithmetic operators are some of the simplest:3+2// => 5: addition3-2// => 1: subtraction3*2// => 6: multiplication3/2// => 1.5: divisionpoints[1].x- points[0].x// => 1: more complicated operands also...
在JavaScript 中,我们有多种将 float 转换为 int 的方法,如下所示。ADVERTISEMENTparseInt() 函数 Number.toFixed() 方法 用按位运算符转换 与0 进行逻辑或 使用双 NOT 运算符 右移0 位 在JavaScript 中使用 Math 库函数 Math.floor() Math.round() Math.ceil() Math.trunc()...