我对表单计算有一个主要问题,它可以工作,但突然不断添加附加零,应该是"$4,000"没有十进制,但就像"26666.666666666668"这里是一段代码
<select Id="height" onChange="Calculate();">
<option value=100>$1,000,000</option>
<option selected="selected" value=200>$2,000,000</option>
<option value=300>$3,000,000</option>
<option value=400>$4,000,000</option>
<option value=500>$5,000,000</option>
<option value=600>$6,000,000</option>
<option value=700>$7,000,000</option>
<option value=800>$8,000,000</option>
<option value=900>$9,000,000</option>
<option value=1000>$10,000,000</option>
</select>
<input type="text" value="$3000" id="currency" name="example5">
<script language="javascript">
function Calculate()
{
var h = document.getElementById('height').value;
var l = document.getElementById('length').value;
var v = document.getElementById('maxwidth').value;
var result= (h * l) * v / 12;
document.getElementById('currency').value = "$" + result;
}
</script>
谢谢。
将浮点值解析为浮点数
function Calculate()
{
var h = document.getElementById('height').value;
var l = document.getElementById('length').value;
var v = document.getElementById('maxwidth').value;
var result= (parseFloat(h) * parseFloat(l)) * parseFloat(v) / 12;
document.getElementById('currency').value = "$" + result;
}