Rounding up to two decimal place in javascript eg 4.9995 to 4.99 in mathematical way in js

Question

How can I convert decimal number to 2 decimal place number? Example: I want to connvert 4.995 to 4.99 but javascript is returning 5.00.

 var price=4.995; var rounded_price=price.toFixed(2); console.log(rounded_price); 

Answer 1

I wouldn't call it rounding but you can achieve it by:

 function trim2Dec(n) { return Math.floor(n * 100) / 100; } alert(trim2Dec(4.995)); 

Answer 2

您可以为此使用正则表达式，如下所示：

 alert("4.995".replace(/(\\d+(\\.\\d{1,2})?)\\d*/, "$1")) 

Answer 3

This is Pretty simple check out this code

 var price=4.995; var price1=4.985; var rounded_price=(Math.round(price*100)/100); var rounded_price1=(Math.round(price1*100)/100); console.log("price : "+rounded_price+" price1 : "+rounded_price1); 

here at first i am multiplying the price and then i have divided it with 100..just as we do to find the percentage of any number.