Question

我的Javascript表单验证存在问题，我正在尝试返回它是否为真，值是否正在工作。它只返回第一个if / else语句（无论是true还是false）和从那里它不起作用。一旦你看到JavaScript，你应该能够理解我想要做的。

var downloadTask: URLSessionDownloadTask?
var session: URLSession?

override func viewDidLoad() {
        super.viewDidLoad()


        let configuration = URLSessionConfiguration.background(withIdentifier: "backgroundSession")
        session = URLSession(configuration: configuration, delegate: self, delegateQueue: OperationQueue.main)

        let url = URL(string: "https://unsplash.it/200/300/?random")!
        downloadTask = session?.downloadTask(with: url)
        downloadTask!.resume()

}

Answer 1

返回将突破该功能。相反，设置一个标志并在结尾返回该标志。

＆＃13;

$('#button').click(function(){
    returnFlag = false
    name = $("#name").val(); //name input
    age = $("#age").val(); //age input
    sex = $("#sex").val(); // sex input

    if(name.match(/(\w)\s(\w)/)){
        returnFlag = true;
    }
    else {
            $('.form-row:first-child').css('border','1px solid red');
            returnFlag = false;
    }

    if (age < 0 || age > 130 || isNaN(age)) {
            $('.form-row:nth-child(2)').css('border','1px solid red');
            returnFlag = false;
    }
    else {
        returnFlag = true;
    }

        if (sex == "male" || sex == "Male" || sex == "female" || sex == "Female"){
            returnFlag = true;
        }
        else {
            $('.form-row:nth-child(3)').css('border','1px solid red');
            returnFlag = false;
        }

    return returnFlag;
  });

＆＃13;

Javascript表单验证（返回问题）

1 个答案: