javascript - LiveCycle Javascript 函数引用错误

Question

我无法弄清楚这个用于实时检查电子邮件地址的功能做错了什么。即使该函数将触发警报或 xfa.host.messageBox，Livecycle 控制台也会返回“ReferenceError:emailAddress 未定义”错误。你能告诉我为什么运行此函数后无法定义全局变量 emailAddress 吗？感谢您抽出时间。

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 变量仅存在于函数内部，但您试图从外部访问它。这超出了范围。不确定您在寻找什么，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);