我的代码是here。下面是HTML：
<!DOCTYPE html>
<html>
<title>Electricity and Magnetism Demo</title>
<body>
<p>
<label>Voltage:</label>
<input id="inputVoltage" type="number" oninput="EqualsVoltage()" onchange="EqualsVoltage()"> </p>
<p>
<label>Current:</label>
<input id="inputCurrent" type="number" oninput="EqualsCurrent()" onchange="EqualsCurrent()"> </p>
<p>
<label>Resistance:</label>
<input id="inputResistance" type="number" oninput="EqualsResistance()" onchange="EqualsResistance()"> </p>
<script language="Javascript" type="text/javascript" src="EandM.js"></script>
</body>
</html>
下面是Javascript：
//Electricity and Magnetism Stuff
function EqualsVoltage() {
var Voltage = document.getElementById("inputVoltage").value;
var Current = document.getElementById("inputCurrent").value;
var Resistance = document.getElementById("inputResistance").value;
document.getElementById("inputVoltage").value = (Current * Resistance);
}
function EqualsCurrent() {
var Voltage = document.getElementById("inputVoltage").value;
var Current = document.getElementById("inputCurrent").value;
var Resistance = document.getElementById("inputResistance").value;
document.getElementById("inputCurrent").value = (Voltage / Resistance);
}
function EqualsResistance() {
var Voltage = document.getElementById("inputVoltage").value;
var Current = document.getElementById("inputCurrent").value;
var Resistance = document.getElementById("inputResistance").value;
document.getElementById("inputResistance").value = (Voltage / Current);
}
我希望计算器在更改文本字段中的值时对oninput和onchange事件都做出反应。
当
oninput和onchange工作时，我已经能够制造出一个能将公里数转换成英里数的转换器；但是，我无法解决这个问题。当我在字段中输入数据时，它不会更改其他值。请帮忙！
最佳答案
这很管用。应该检查其他文本框而不是当前文本框。它会随着用户增加或减少值而不断更改字段。
<!DOCTYPE html>
<html>
<title>Electricity and Magnetism Demo</title>
<head>
<script type="text/javascript">
function EqualsVoltage() {
var Voltage = document.getElementById("inputVoltage").value;
var Current = document.getElementById("inputCurrent").value;
var Resistance = document.getElementById("inputResistance").value;
if(Resistance != "0" && Current != "0" ){
document.getElementById("inputVoltage").value = (Current * Resistance);
}
}
function EqualsCurrent() {
var Voltage = document.getElementById("inputVoltage").value;
var Current = document.getElementById("inputCurrent").value;
var Resistance = document.getElementById("inputResistance").value;
if(Voltage != "0" && Resistance != "0" ){
document.getElementById("inputCurrent").value = (Voltage / Resistance);
}
}
function EqualsResistance() {
var Voltage = document.getElementById("inputVoltage").value;
var Current = document.getElementById("inputCurrent").value;
var Resistance = document.getElementById("inputResistance").value;
if(Voltage != "0" && Current != "0" ){
document.getElementById("inputResistance").value = (Voltage / Current);
}
}
</script>
</head>
<body>
<p>
<label>Voltage:</label>
<input id="inputVoltage" type="number" oninput="EqualsResistance(); EqualsCurrent()" value="0"> </p>
<p>
<label>Current:</label>
<input id="inputCurrent" type="number" oninput="EqualsVoltage(); EqualsResistance()" value="0"> </p>
<p>
<label>Resistance:</label>
<input id="inputResistance" type="number" oninput="EqualsCurrent();EqualsVoltage()" value="0"> </p>
</body>
</html>
关于javascript - 由于错误的编码，oninput和onchange无法正常工作，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/55913585/