电子邮件脚本不能正常工作

Question

我试图在提交表单并将信息填入电子表格时收到一封电子邮件。昨天的工作，但自那以后所有我得到的是一个错误

7/13/14 5:23 PM sendFormByEmail TypeError: Cannot call method "toString" of undefined. (line 20, file "Email Script") formSubmit

function sendFormByEmail(e) 
{  
    // Remember to replace XYZ with your own email address 
    var email = "lumbyb@gmatc.matc.edu"; 

    // Optional but change the following variable 
    // to have a custom subject for Google Docs emails 
    var subject = "PC Repair Ticket"; 

    // The variable e holds all the form values in an array. 
    // Loop through the array and append values to the body. 

    var s = SpreadsheetApp.getActiveSheet(); 
    var headers = s.getRange(1,1,1,s.getLastColumn()).getValues()[0];  
    var message = "";  

    // Credit to Henrique Abreu for fixing the sort order 

    for(var i in headers) 
    message += headers[i] + ' = '+ e.namedValues[headers[i]].toString() + "\n\n"; 

    // This is the MailApp service of Google Apps Script 
    // that sends the email. You can also use GmailApp here. 

    MailApp.sendEmail(email, subject, message); 

    // Watch the following video for details 
    // http://youtu.be/z6klwUxRwQI 

    // By Amit Agarwal - www.labnol.org 
} 

Answer 1

检查是否转换为字符串之前就存在的价值。

for(var i in headers) { 
    if (e.namedValues[headers[i]]) { 
     message += headers[i] + ' = '+ e.namedValues[headers[i]].toString() + "\n\n"; 
    } 
    }