使用 HTML 和 javascript 的折扣计算器
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时间：2020-10-27 17:32:29 来源:igfitidea点击:
Discount Calculator using HTML and javascript
提问by user3001030
I am using this code to set a value to a html textbox the code works but the values appears and then disappear immediately.
我正在使用此代码为 html 文本框设置一个值，该代码有效，但这些值出现然后立即消失。
<script type="text/javascript">
function calculate() {
var price=0, discount=0, afterDiscount=0;
price = Number(document.discountCalculator.price.value);
discount = Number(document.discountCalculator.discount.value);
afterDiscount=price - ( price*discount/100 );
document.discountCalculator.price.value=price.toFixed(2);
document.discountCalculator.discount.value=discount.toFixed(2);
document.discountCalculator.afterDiscount.value=afterDiscount.toFixed(2);
}
回答by Ali Sarfaraz
i just tried your code and it works fine. see if you have anything missing
我刚刚试过你的代码，它工作正常。看看你有没有遗漏什么
<html>
<head>
<script type="text/javascript">
function calculate() {
var price=0, discount=0, afterDiscount=0;
price = Number(document.discountCalculator.price.value);
discount = Number(document.discountCalculator.discount.value);
afterDiscount=price - ( price*discount/100 );
document.discountCalculator.price.value=price.toFixed(2);
document.discountCalculator.discount.value=discount.toFixed(2);
document.discountCalculator.afterDiscount.value=afterDiscount.toFixed(2);
}
</script>
</head>
<body>
<form name="discountCalculator" >
<input type="text" name="price" >
<input type="text" name="discount" >
<input type="text" name="afterDiscount" >
</form>
<input type="button" value="submit" onclick="calculate()">
</body>
</html>
