問題,當用戶輸入的數字爲負數時,如何使其成爲負數,它不會添加到將要輸出的總變量中?如果聲明?如果它們是負數,請不要將數字添加到總變量中
下面的代碼!
function lab10logicInLoopsPart1()
{
lCounter = 1;
var total = 0;
userNumber = 0;
while(lCounter < 6) {
lCounter++;
userNumber = prompt("Enter a number.");
total += +userNumber;
document.write("Entered number was: " + userNumber + "\n");
}
document.write("\nTotal: " + total);
}
使用'如果(userNumber> = 0)' –
總+ = MAX( 0,userNumber) – KacireeSoftware