LiveCycle Javascript函数ReferenceError

Question

我不知道这个livecycle检查电子邮件地址的函数做错了什么。Livecycle控制台返回"ReferenceError: emailAddress未定义“的错误，即使该函数将触发警报或xfa.host.messageBox。你能告诉我为什么在运行完这个函数后不能定义全局变量emailAddress吗？耽误您时间，实在对不起。

function fxemailverification(emailAddress) {

    var r = new RegExp("^[A-Za-z0-9_\\-\\.]+\\@test.com");

    // Test the rawValue of the current object to see if it matches the new RegExp
    var result = r.test(emailAddress); 

    if (result == false) {
        var emailAddress = "";
        alert("You have entered an invalid Email address. \nAll email addresses must end in '@test.com'.", "Email Verification", 4, 0);
    }
    return emailAddress;
};

textfield1.rawValue = fxemailverification(emailAddress);

Answer 1

emailAddress变量只存在于函数内部，但您试图从外部访问它。它超出了范围。不知道你在找什么，也许是这个？

var emailAddress = "";
function fxemailverification(emailAddress) {
    var r = new RegExp("^[A-Za-z0-9_\\-\\.]+\\@test.com");
    // Test the rawValue of the current object to see if it matches the new RegExp
    var result = r.test(emailAddress); 

    if (result == false) {
        emailAddress = "";
        alert("You have entered an invalid Email address. \nAll email addresses must end in '@test.com'.", "Email Verification", 4, 0);
    }
    return emailAddress;
};

textfield1.rawValue = fxemailverification(emailAddress);