Question

需要一点帮助。我需要从yesOrNo .toLowerCase（）和.charAt（0）做出响应，同时检查响应是==到'y'。任何帮助表示感谢。

<!doctype html>
<title>'Schittys Pizza'</title>
<script>
// Asks if you want to order
var yesOrNo = prompt('Welcome to Schitty\'s pizza, would you like to order?, Yes or         No?');
    if(yesOrNo == 'y') {
    // Asks Address
    var address = prompt('What is your Address?')
    while (address == null || address == '')
    address = prompt('What is your address, please?')
}
</script>

Answer 1

试试这个

var yesOrNo = prompt('Welcome to Schitty\'s pizza, would you like to order?, Yes or No?').toLowerCase()[0];

if(yesOrNo === 'y') {
    // do your yes logic
}

或

var yesOrNo = prompt('Welcome to Schitty\'s pizza, would you like to order?, Yes or No?').toLowerCase();

if(yesOrNo[0] === 'y') {
    // do your yes logic
}

或

var yesOrNo = prompt('Welcome to Schitty\'s pizza, would you like to order?, Yes or No?');

if(yesOrNo.toLowerCase()[0] === 'y') {
    // do your yes logic
}

或

var yesOrNo = prompt('Welcome to Schitty\'s pizza, would you like to order?, Yes or No?');

if(yesOrNo.toLowerCase().charAt(0) === 'y') {
    // do your yes logic
}

.charAt和.toLowerCase难题

1 个答案: