JavaScript上的价格计算字段错误

Question

i have a problem with price calculation script:

this is the code:

function setVisibility(id, visibility) {
document.getElementById(id).style.display = visibility;
}


function getRBtnName(GrpName) {
  var sel = document.getElementsByName(GrpName);
  var fnd = -1;
  var str = '';
  for (var i=0; i<sel.length; i++) {
    if (sel[i].checked == true) { str = sel[i].value ;  fnd = i; }
  }


//  return fnd;   // return option index of selection
// comment out next line if option index used in line above  
  return str;
} 

function DisplayPrice(price){
  var val1 = getRBtnName('deckung').split(',');

  var sum = parseFloat(val1[0]+0);
  document.getElementById('totalSum').value=sum +",- €";

}
onload=function() {
  DisplayPrice();   
}

The problem is that i get the prices without a second place!

Example: get price 1368.5 € But need this to display as 1368.50 €

can anybody help me with this issue?

Answer 1

您可以编写sum.toFixed(2)来获得始终始终精确地sum.toFixed(2)两位小数的字符串。

Answer 2

Try

var num = new Number(val1[0]);
document.getElementById('totalSum').value = num.toFixed(2) +",- €";