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我正在计算基于userinput的价格。当用户输入页数时,它将乘以2,结果将显示在#result框中。现在,当用户单击复选框时,总数(#result)值将乘以3并显示在#result文本框中。当用户点击它时,旧的结果应该显示在文本框中。复选框单击作品,取消选中复选框不工作Javascript
例,
Total number of pages: 2 ---> total: 4
checkbox clicked ----> total: 12
checkbox unchecked ---> total: 4
当单击显示值12的复选框,但是当我取消选中该复选框值仍是12,而不是显示4 ...
谁能帮助我与解决方案
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Calculating</title>
<script>
function calculate()
{
var myBox1 = document.getElementById('pages').value;
if(isNaN(myBox1))
{
alert('Enter only numbers');
}
else
{
const myBox2=2;
var result = document.getElementById('result');
var myResult = myBox1 * myBox2;
result.value = myResult;
}
}
function checkbox1()
{
var result1 = document.getElementById('result').value;
const bresult=result1;
if(document.getElementById('ckbox').checked === true)
{
const checks=3;
var myResult1=result1 * checks;
result.value = myResult1;
}
if(document.getElementById('ckbox').checked === false)
{
result.value=bresult;
}
}
</script>
</head>
<body>
<table>
<tr>
<td>Number of Pages</td>
<td>Check Boxes</td>
<td>Total</td>
</tr>
<tr>
<td><input id="pages" type="text" oninput="calculate()" /></td>
<td><input type="checkbox" id="ckbox" onclick="checkbox1()">Assistance</td>
<td><input id="result" /></td>
</tr>
</table>
</body>
</html>
它正在工作!谢谢@balachandar – JavaLearner1