Question

您的Javascript必须遵循以下准则：


如果收入为70,000美元或以上，税率从70％开始（％符号不会显示）

如果收入是20,000美元或以下，税率从10％开始（％符号不会显示）

否则税率从25％开始

我知道可能有1000个错误，但任何有助于我解决这个问题的事情都会有所帮助

我的功能不起作用，我很确定我甚至不在正确的轨道上

<html>
<head>
<script language = "JavaScript">

function ()
{
var IncomeInput,
TaxRateCalc;

IncomeInput = parseInt(document.TaxInfo.Income.value);

if (IncomeInput>=70000)
{
    TaxRateCalc = "70";
}
else if (IncomeInput=<20000)
{
    TaxRateCalc = "10";
}
else ()
{
    TaxRateCalc = "25"; 
}
document.TaxInfo.TaxRate.value = TaxRateCalc;
}
</script>
</head>
<body>
<center>
The Taxman
</center>

<form name = "TaxInfo">
<table border = "3">
Your Tax Information<br>
<tr><td>Income</td> <td> <input name = "Income" value = "10000000" size = "20"> </td> </tr>
<tr><td>RRSP</td> <td> <input name = "RRSP" value ="0" size = "20"></td> </tr>
<tr><td>Tax Rate</td> <td> <input name = "TaxRate" value = "" size = "20"> </td> </tr>
<tr><td>Taxes Paid</td> <td> <input name = "TaxesPaid" value = "0" size = "20"> </td> </tr>
<tr><td>Refund or Due</td> <td> <input name = "RefundOrDue"  value = "0"size = "20"> </td> </tr> 
</table>
</form>

<form name = "Extra Deductions">
Extra Deductions-
Children <input name = "Children" type = "radio">
Spouse <input name = "Spouse" type = "radio">
Both <input name = "Both" type = "radio">
None <input name = "None" checked type = "radio">
</form>

<form name = OldPeople >
Over age 65? <input name = "Over age 65?" type = "checkbox" >
</form>

<form name = "Selection">
Special Cases
<select name="SpecialCases">

    <option value ="None"> None </option>
    <option value ="Hardship Claimed"> Hardship Claimed </option>
    <option value ="Mercy"> Mercy </option>
    <option value ="Lawyer"> Lawyer </option>
</select>
</form>

<form name = "buttons">
<input type = "button" value = "Calculate your tax" onclick = "">
<input type = "button" value = "Clear Display Area" onclick= "aloop">
</form>

<form name = "YourTaxRate">
Your Tax Rate<br> <textarea name = "TaxRate" rows = "15" cols = "25"> </textarea>
</form>
</body>
</html>

Answer 1

我想知道有多少是模板。顺便说一下，对自己有信心。我不知道你自己写了多少，但对于函数本身，只需要切换IncomeInput<=20000比较器。

<html>
<head>
</head>


<body>

<script>

function calcTax() {

    var IncomeInput, TaxRateCalc;

    IncomeInput = parseInt(document.TaxInfo.Income.value);

    if (IncomeInput>=70000)
    {
        TaxRateCalc = "70";
    }
    else if (IncomeInput<=20000)
    {
        TaxRateCalc = "10";
    }
    else
    {
        TaxRateCalc = "25"; 
    }
    document.YourTaxRate.TaxRate.value = TaxRateCalc;

}

</script>

<center>
The Taxman
</center>


<form name = "TaxInfo">
    <table border = "3">
        Your Tax Information<br>
        <tr><td>Income</td> <td> <input name = "Income" value = "10000000" size = "20"> </td> </tr>
        <tr><td>RRSP</td> <td> <input name = "RRSP" value ="0" size = "20"></td> </tr>
        <tr><td>Tax Rate</td> <td> <input name = "TaxRate" value = "" size = "20"> </td> </tr>
        <tr><td>Taxes Paid</td> <td> <input name = "TaxesPaid" value = "0" size = "20"> </td> </tr>
        <tr><td>Refund or Due</td> <td> <input name = "RefundOrDue"  value = "0"size = "20"> </td> </tr> 
    </table>
</form>

<form name = "Extra Deductions">
    Extra Deductions-
    Children <input name = "Children" type = "radio">
    Spouse <input name = "Spouse" type = "radio">
    Both <input name = "Both" type = "radio">
    None <input name = "None" checked type = "radio">
</form>

<form name = "OldPeople" >
    Over age 65? <input name = "Over age 65?" type = "checkbox" >
</form>

<form name = "Selection">
    Special Cases
    <select name="SpecialCases">

        <option value ="None"> None </option>
        <option value ="Hardship Claimed"> Hardship Claimed </option>
        <option value ="Mercy"> Mercy </option>
        <option value ="Lawyer"> Lawyer </option>
    </select>
</form>

<form name = "buttons">
    <input type = "button" value = "Calculate your tax!" onclick = "calcTax()" />
    <input type = "button" value = "Clear Display Area" onclick = "" />
</form>

<form name = "YourTaxRate">
    Your Tax Rate<br> <textarea name = "TaxRate" rows = "15" cols = "25"> </textarea>
</form>

</body>
</html>

Answer 2

试试这个：

＆＃13;

function myFunction() {
  var income = document.getElementById("income").value;
  var taxRateCalc;
  if (income == "") {
    alert("Please type a valid income.");
  } else {
    if (income >= 70000) {
      taxRateCalc = "70";
    }
    else if (income <= 20000) {
      taxRateCalc = "10";
    }
    else {
      taxRateCalc = "25"; 
    }
    document.getElementById("taxRate").value = taxRateCalc;
  }
}

＆＃13;

Income: <input type="text" id="income">
<button onclick="myFunction()">Validate Income</button><br><br>
Tax Rate: <input type="text" id="taxRate" readonly>

＆＃13;

初学者试图将税率应用于个人的收入

2 个答案: