我有一个JavaScript费用计算器,但我无法使其在div中显示我的费用总额。请问哪里出了问题?它应该是费用的运行总计,但我不知道为什么代码在此片段中无法运行?或者是否可以将其更改为jQuery,我刚刚下载了2.1.0?
http://jsfiddle.net/bd0eL69b/
//Set up an associative array
//The keys represent the size of the cake
//The values represent the cost of the cake i.e A 10" cake cost's $35
var cake_prices = new Array();
cake_prices["Round6"]=20;
cake_prices["Round8"]=25;
cake_prices["Round10"]=35;
cake_prices["Round12"]=75;
//Set up an associative array
//The keys represent the filling type
//The value represents the cost of the filling i.e. Lemon filling is $5,Dobash filling is $9
//We use this this array when the user selects a filling from the form
var filling_prices= new Array();
filling_prices["None"]=0;
filling_prices["Lemon"]=5;
filling_prices["Custard"]=5;
filling_prices["Fudge"]=7;
filling_prices["Mocha"]=8;
filling_prices["Raspberry"]=10;
filling_prices["Pineapple"]=5;
filling_prices["Dobash"]=9;
filling_prices["Mint"]=5;
filling_prices["Cherry"]=5;
filling_prices["Apricot"]=8;
filling_prices["Buttercream"]=7;
filling_prices["Chocolate Mousse"]=12;
// getCakeSizePrice() finds the price based on the size of the cake.
// Here, we need to take user's the selection from radio button selection
function getCakeSizePrice()
{
var cakeSizePrice=0;
//Get a reference to the form id="cakeform"
var theForm = document.forms["cakeform"];
//Get a reference to the cake the user Chooses name=selectedCake":
var selectedCake = theForm.elements["selectedcake"];
//Here since there are 4 radio buttons selectedCake.length = 4
//We loop through each radio buttons
for(var i = 0; i < selectedCake.length; i++)
{
//if the radio button is checked
if(selectedCake[i].checked)
{
//we set cakeSizePrice to the value of the selected radio button
//i.e. if the user choose the 8" cake we set it to 25
//by using the cake_prices array
//We get the selected Items value
//For example cake_prices["Round8".value]"
cakeSizePrice = cake_prices[selectedCake[i].value];
//If we get a match then we break out of this loop
//No reason to continue if we get a match
break;
}
}
//We return the cakeSizePrice
return cakeSizePrice;
}
//This function finds the filling price based on the
//drop down selection
function getFillingPrice()
{
var cakeFillingPrice=0;
//Get a reference to the form id="cakeform"
var theForm = document.forms["cakeform"];
//Get a reference to the select id="filling"
var selectedFilling = theForm.elements["filling"];
//set cakeFilling Price equal to value user chose
//For example filling_prices["Lemon".value] would be equal to 5
cakeFillingPrice = filling_prices[selectedFilling.value];
//finally we return cakeFillingPrice
return cakeFillingPrice;
}
//candlesPrice() finds the candles price based on a check box selection
function candlesPrice()
{
var candlePrice=0;
//Get a reference to the form id="cakeform"
var theForm = document.forms["cakeform"];
//Get a reference to the checkbox id="includecandles"
var includeCandles = theForm.elements["includecandles"];
//If they checked the box set candlePrice to 5
if(includeCandles.checked==true)
{
candlePrice=5;
}
//finally we return the candlePrice
return candlePrice;
}
function insciptionPrice()
{
//This local variable will be used to decide whether or not to charge for the inscription
//If the user checked the box this value will be 20
//otherwise it will remain at 0
var inscriptionPrice=0;
//Get a refernce to the form id="cakeform"
var theForm = document.forms["cakeform"];
//Get a reference to the checkbox id="includeinscription"
var includeInscription = theForm.elements["includeinscription"];
//If they checked the box set inscriptionPrice to 20
if(includeInscription.checked==true){
inscriptionPrice=20;
}
//finally we return the inscriptionPrice
return inscriptionPrice;
}
function calculateTotal()
{
//Here we get the total price by calling our function
//Each function returns a number so by calling them we add the values they return together
var cakePrice = getCakeSizePrice() + getFillingPrice() + candlesPrice() + insciptionPrice();
//display the result
var divobj = document.getElementById('totalPrice');
divobj.style.display='block';
divobj.innerHTML = "Total Price For the Cake $"+cakePrice;
}
function hideTotal()
{
var divobj = document.getElementById('totalPrice');
divobj.style.display='none';
}
<label class='radiolabel'><input type="radio" name="selectedcake" value="Round6" onclick="calculateTotal()" />Round cake 6" - serves 8 people ($20)</label><br/>
<label class='radiolabel'><input type="radio" name="selectedcake" value="Round8" onclick="calculateTotal()" />Round cake 8" - serves 12 people ($25)</label><br/>
<label class='radiolabel'><input type="radio" name="selectedcake" value="Round10" onclick="calculateTotal()" />Round cake 10" - serves 16 people($35)</label><br/>
<label class='radiolabel'><input type="radio" name="selectedcake" value="Round12" onclick="calculateTotal()" />Round cake 12" - serves 30 people($75)</label><br/>
<br/>
<label >Filling</label>
<select id="filling" name='filling' onchange="calculateTotal()">
<option value="None">Select Filling</option>
<option value="Lemon">Lemon($5)</option>
<option value="Custard">Custard($5)</option>
<option value="Fudge">Fudge($7)</option>
<option value="Mocha">Mocha($8)</option>
<option value="Raspberry">Raspberry($10)</option>
<option value="Pineapple">Pineapple($5)</option>
<option value="Dobash">Dobash($9)</option>
<option value="Mint">Mint($5)</option>
<option value="Cherry">Cherry($5)</option>
<option value="Apricot">Apricot($8)</option>
<option value="Buttercream">Buttercream($7)</option>
<option value="Chocolate Mousse">Chocolate Mousse($12)</option>
</select>
<br/>
<p>
<label for='includecandles' class="inlinelabel">Include Candles($5)</label>
<input type="checkbox" id="includecandles" name='includecandles' onclick="calculateTotal()" />
</p>
<p>
<label class="inlinelabel" for='includeinscription'>Include Inscription($20)</label>
<input type="checkbox" id="includeinscription" name="includeinscription" onclick="calculateTotal()" />
<input type="text" id="theinscription" name="theinscription" value="Enter Inscription" />
</p>
<div id="totalPrice"></div>