警报窗口向我显示消息 NaN 出了什么问题?
感谢您的帮助var weight = parseFloat(document.BMI.weight.value)
var height = parseFloat(document.BMI.height.value)
function calcBMI() {
var answer = weight * 703 / (height*height)
return answer;
}
</script>
<form action="" name="BMI">
<input type="text" name="weight" />
<input type="text" name="height" />
<input type="submit" onclick="alert(calcBMI())" />
</form>
最佳答案
<script type="text/javascript">
function calcBMI() {
var weight = parseFloat(document.BMI.weight.value)
var height = parseFloat(document.BMI.height.value)
var answer = weight * 703 / (height*height)
return answer;
}
</script>
<form action="" name="BMI">
<input type="text" name="weight" />
<input type="text" name="height" />
<input type="submit" onclick="alert(calcBMI())" />
</form>
希望它现在可以工作:)
关于javascript - 为什么这个简单的 JavaScript 程序不能运行?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/14744493/