当我单击总和，乘除按钮时，我收到“ NaN”错误

When I click the sum, multiply and divide button I got "NaN" error

本文关键字：NaN 错误 单击 按钮      更新时间：2023-09-26
Here is my code:
 <!DOCTYPE html>
<HTML>
<HEAD>
<script>
var a,b,result;
function setValues()
{
a = Number(document.getElementById("a").Value);
b = Number(document.getElementById("b").Value);
}
function sum()
{
setValues();
result = a+b;
alert("The Sum For The Values Is "+result);
}
function multiply()
{
setValues();
result = a*b;
alert("The Product For The Values Is "+result);
}
function div()
{
setValues();
result = a/b;
alert("The Quotient For The Values Is "+result);
}
</script>
</HEAD>

<STYLE>
body
{
background-color: #b0c4de;
}
 </STYLE>
 <body>
 <CENTER>
 <H1><B><U> Fun Facts!</B></U></H1>
 <H4>Did You Know There Are Over 7 Billion People In The World!!!</H4>
 <div>
 <input Id="a" Type="Text"/>
 <input Id="b" Type="Text"/>
 <input Type="Button"  onclick="sum()" Value="sum"/>
 <input Type="Button"  onclick="multiply()" Value="multiply"/>
 <input Type="Button"  onclick="div()" Value="divide"/>
 </div>
 </body>

 </CENTER>



</HTML>

这是一个简单的计算器，但是当我单击um，乘法或除法时，我得到"NaN错误。我添加了警报系统，所以答案是总和、乘积或商，然后是答案，但我确实得到了警报系统，但我得到的结果是 NaN 请帮忙。 谢谢 

 <!DOCTYPE html>
    <HTML>
    <HEAD>
    <script>
    var a,b,result;
    function setValues()
    {
    a = Number(document.getElementById("a").Value);
    b = Number(document.getElementById("b").Value);
    }
    function sum()
    {
    setValues();
    result = a+b;
    alert("The Sum For The Values Is "+result);
    }
 
    function multiply()
    {
    setValues();
    result = a*b;
    alert("The Product For The Values Is "+result);
    }
    function div()
    {
    setValues();
    result = a/b;
    alert("The Quotient For The Values Is "+result);
    }
    </script>
    </HEAD>
    <STYLE>
    body
    {
    background-color: #b0c4de;
    }
     </STYLE>
     <body>
     <CENTER>
     <H1><B><U> Fun Facts!</B></U></H1>
     <H4>Did You Know There Are Over 7 Billion People In The World!!!</H4>
     <div>
     <input Id="a" Type="Text"/>
     <input Id="b" Type="Text"/>
     <input Type="Button"  onclick="sum()" Value="sum"/>
     <input Type="Button"  onclick="multiply()" Value="multiply"/>
     <input Type="Button"  onclick="div()" Value="divide"/>
     </div>
     </body>
     </CENTER>

    </HTML>

你有一个简单的错误：

function setValues()
{
a = Number(document.getElementById("a").Value);
b = Number(document.getElementById("b").Value);
}

.Value应该是.value...

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