Question

我正在做练习，这些是要求：

使用For循环逐步遍历中奖号码数组中的每个位置，并将客户编号与数组包含的每个数字进行比较。

要完成此操作，您需要设置以下内容。

循环的计数器变量（例如i）。
一个布尔变量（例如匹配），用于标记是否已找到匹配项。
复合AND条件，允许循环仅继续迭代如果找不到匹配项，并且尚未到达数组的末尾。
if语句嵌套在For循环中，用于检查客户数字对阵列中的每个获胜号码，每次循环迭代，并在找到匹配项时将布尔匹配设置为true。

到目前为止我的工作原理但我不明白需求3的位置或需要它（因为for循环已经检查到数组的末尾还没有到达？所以肯定只需要一个如果陈述而不是复合词？），有人可以解释一下吗？

到目前为止我所拥有的：

＆＃13;

var customerNumbers = 12;
var winningNumbers = [];
var match = false;

// Adds the winning numbers to winningNumbers
winningNumbers.push(12, 17, 24, 37, 38, 43);

// Messages that will be shown
var winningMessage = "This Week's Winning Numbers are:\n\n" + winningNumbers + "\n\n";
var customerMessage = "The Customer's Number is:\n\n" + customerNumbers + "\n\n";
var resultMessage = "Sorry, you are not a winner this week.";

// Searches the array to check if the customer number is a winner
for (var i = 0; i < winningNumbers.length; i++) {
	if (customerNumbers == winningNumbers[i]) {
		resultMessage = "We have a match and a winner!"
		match = true;
	}
}

// Result
alert(winningMessage + customerMessage + resultMessage);

＆＃13;

Answer 1

将for语句添加到for条件中 for (var i = 0; i < winningNumbers.length && !match; i++) {

无需更改if语句

＆＃13;

var customerNumbers = 12;
var winningNumbers = [];
var match = false;

// Adds the winning numbers to winningNumbers
winningNumbers.push(12, 17, 24, 37, 38, 43);

// Messages that will be shown
var winningMessage = "This Week's Winning Numbers are:\n\n" + winningNumbers + "\n\n";
var customerMessage = "The Customer's Number is:\n\n" + customerNumbers + "\n\n";
var resultMessage = "Sorry, you are not a winner this week.";

// Searches the array to check if the customer number is a winner
for (var i = 0; i < winningNumbers.length && !match; i++) {
	if (customerNumbers == winningNumbers[i]) {
		resultMessage = "We have a match and a winner!"
		match = true;
	}
}

// Result
alert(winningMessage + customerMessage + resultMessage);

＆＃13;

添加一个复合AND条件，允许循环仅在以下情况下继续迭代

1 个答案: