Question

我想要一个文本框，旁边有一个按钮。当您单击按钮时，我想转换为华氏度或摄氏度并显示在另一个文本框中。我只完成华氏温度到摄氏温度，我可以在完成后复制代码。

<!DOCTYPE html>
<html>
<head>
<center>
<h1> Fahrenheit to Celsius Converter</h1> 
<font size="+1" > 
<p> Fahrenheit to Celsius</p>
<input type="text" name="ftc" id="ftc"/> <button type="button" onclick="fahrenheitCelsius()" /> Click to Convert </button>
<p>Celsius to Fahrenheit </p>
<input type="text" name="ctf" id="ctf" /> <button type="button" onclick="celsiusFahrenheit()" /> Click to Convert </button>
<p> Answer </p>
<input type="text" name="answer box" id="answer/> 
<script>

 function fahrenheitCelsius() {  
    var fsc = parseFloat(document.getElementById('ftc').value);
    var cfc = (fsc-32) * (5/9);
    document.getElementById('answer box').value = cfc;
    return false; 
    document.writeIn(<input type="text" name="answer box" id="answer"/>)
    }

</script>
</font>
</head>
</html>

Answer 1

你犯了很多错误。以下是Fahrenheit to celcius的工作代码：https://jsfiddle.net/nm8ashr1/

<!DOCTYPE html>
<center>
<h1> Fahrenheit to Celsius Converter</h1> 
<h2> Fahrenheit to Celsius</h2>
<input type="text" name="ftc" id="ftc"/> <button type="button" onclick="fahrenheitCelsius()"> Click to Convert</button>
<p>Celsius to Fahrenheit </p>
<input type="text" name="ctf" id="ctf" /> <button type="button" onclick="celsiusFahrenheit()"> Click to Convert</button>
<p> Answer </p>
<input type="text" name="answer box" id="answer"/> 
<script>

 function fahrenheitCelsius() {  
    var fsc = parseFloat(document.getElementById('ftc').value);
    var cfc = (fsc-32) * (5/9);
    document.getElementById('answer').value = cfc;
    }

</script>

华氏度到摄氏度转换器

1 个答案: