只有第一个对象保存在javascript for循环中 [英] only first object getting saved in javascript for loop

问题描述

在parse.com上，我试图保存包含以下内容的对象:

On parse.com, Im trying to save an object which includes:

• 邮件正文，
• 发件人姓名
• 发件人ID，

• 和收件人姓名

• a message body,
• the senders name,
• the senders id,

• and the recipients name

转到称为消息"的类.该对象被正确地保存，但是，当我尝试使用for循环以保存3个不同副本且每个副本具有不同且随机的收件人时，仅保存第一个对象.

to a class called "Messages." The object is getting saved correctly, however, when i try to use a for loop in order to save 3 different copies each with a different and random recipient, only the first object gets saved.

randUsers是一个具有三个随机用户的数组.

randUsers is an array with three random users.

我该如何解决?

function sendLean(leanBody, leanSenderName, leanSenderId, randUsers){
    var Messages = Parse.Object.extend("Messages");
    var messages = new Messages();
    for(var i = 0; i < 3; ++i){

      messages.set("messageBody", leanBody);
      messages.set("recipientId", randUsers[i]);
      messages.set("senderName",  leanSenderName);
      messages.set("senderId", leanSenderId);

      messages.save(null, {
        success: function(messages) {
          // Execute any logic that should take place after the object is saved.
          alert('New object created with objectId: ' + messages.id);
        },
        error: function(messages, error) {
          // Execute any logic that should take place if the save fails.
          // error is a Parse.Error with an error code and message.
          alert('Failed to create new object, with error code: ' + error.message);
        }
      });
    }

推荐答案

您需要Messages对象的每个新实例都位于for循环内.更改

You need each new instance of your Messages object to be inside your for loop. Change

var messages = new Messages();
for(var i = 0; i < 3; ++i){

到

for(var i=0,l=randUsers.length; i<l; i++){
  var messages = new Messages;

如果randUsers是一个数组，或者

for(var i in randUsers){
  var messages = new Messages;

如果randUsers是对象.

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