Problem: multiple ways to format a function in JS that preserves two decimal places in data

Best way:

Keep two of them, I think

var a = 9.39393;
alert(a.toFixed(2));

Description:

Alert (Number. ToFixed (9.39393));

Other methods:

function roundFun(numberRound,roundDigit) //Round to the roundDigit
 {
 if (numberRound>=0)
 {
 var tempNumber = parseInt((numberRound * Math.pow(10,roundDigit)+0.5))/Math.pow(10,roundDigit);
 return tempNumber;
 }
 else
 {
 numberRound1=-numberRound
 var tempNumber = parseInt((numberRound1 * Math.pow(10,roundDigit)+0.5))/Math.pow(10,roundDigit);
 return -tempNumber;
 }
}

Method 2:

<script>
 tmp = "1234567.57232"
 result = tmp.substr(0,tmp.indexOf(".")+3);
 alert(result);
 </script>

Method 3:

var a=3.1415926;
a = a.toFixed(2);//Keep 2 bits but the result is a String type
a = parseFloat(a);//Converting the result will float
//In one step, I'll say
a = parseFloat(a.toFixed(2));