[英]Javascript, prompt box and confirm box
新用戶在這里。 誰能幫我解決這個問題? 在這里參考問題http://i.imgur.com/e8UbQfB.jpg
到目前為止,這是我設法做到的,當然充滿了錯誤,如果我使用開關盒,是否正確? 或者也許我可以使用if ... else語句?
<!DOCTYPE html>
<html>
<head>
<script type="text/javascript">
var price;
var weight = parseFloat(prompt("Enter amount of laundry: ", ""));
var rate;
switch (weight)
{
case 1:
rate = weight <= 10;
price = 2.00;
break;
case 2:
rate = weight >= 10 && weight <= 20;
price = 1.50;
break;
case 3:
rate = weight >= 20;
price = 1.00;
break;
}
var total = price * weight;
alert
(
"\nWeight : " + weight +
"\nRate : " + price +
"\nTotal : RM " + total
);
</script>
</head>
</html>`
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