Javascript 元素总和值

Question

JavaScript 代码:

function getCheckbox(name,id){
  var check = 0; 
  var deger = "option-checkbox-"+id; 
  var dom = document.getElementById(deger); 
  if( dom.checked )
       check += parseFloat( dom.value ); 
  else check -= parseFloat( dom.value ); 
  return check.toFixed(2);**//right value.(12.45)** 
} 

function getRadio(name,id) {
  var radio=0; 
  var deger="option-radio-"+id; 
  var radio="option["+name+"]"; 
  var selectedli = document.getElementsByName(radio); 
  var degerli    = document.getElementById(deger); 
  if( selectedli.checked )
       radio = parseFloat( degerli.value );
  else radio = parseFloat( degerli.value )
  return radio.toFixed(2)**//right value.(42.00)** 
} 

function getSelected(name,id) {
  var selectedid="option["+name+"]"; 
  var selecte = 0; 
  var selected = document.getElementById( selectedid ); 
  selecte = parseFloat(selected.value); 
  return selecte.toFixed(2);**//right value.(-12.29)** 
} 

function toplam(name,id) {**//not expected(0)** 
  var toplan = 0; 
  toplan = getSelected(name,id)+getRadio(name,id)+getCheckbox(name,id); 
  $( '#toplam_goster' ).fadeOut(200, function(){
    document.getElementById("toplam_goster").innerHTML = toplan;
  }); 
  $( '#toplam_goster' ).fadeIn(200); 
} 

.在最后一个函数中返回0。我该如何修复它。

谢谢。

Answer 1

return selecte.toFixed(2); // this returns string and addition might return 0

要么返回数字，即返回selecte*1或在添加之前转换为数字，即

toplan=getSelected(name,id)*1+getRadio(name,id)*1+getCheckbox(name,id)*1;