我是云功能的新手,但我有一个无法理解的大障碍。我创建了<!doctype html>
<html lang="en">
<head>
<!-- link to css -->
<link rel="stylesheet" href="style.css">
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/css/bootstrap.min.css" integrity="sha384-GJzZqFGwb1QTTN6wy59ffF1BuGJpLSa9DkKMp0DgiMDm4iYMj70gZWKYbI706tWS" crossorigin="anonymous">
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.6/umd/popper.min.js" integrity="sha384-wHAiFfRlMFy6i5SRaxvfOCifBUQy1xHdJ/yoi7FRNXMRBu5WHdZYu1hA6ZOblgut" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/js/bootstrap.min.js" integrity="sha384-B0UglyR+jN6CkvvICOB2joaf5I4l3gm9GU6Hc1og6Ls7i6U/mkkaduKaBhlAXv9k" crossorigin="anonymous"></script>
<title>Notebook</title>
</head>
<body>
<div class="container min-vh-100 d-flex flex-column" id="container">
<!-- header -->
<div class="row align-items-start bg-info" id="header">
<div class="col text-center">
<button type="button" class="btn" id="cancel">✗</button>
<button type="button" class="btn" id="back">↩</button>
</div>
<div class="col text-center">
<h4 id="title">Notebook</h4>
</div>
<div class="col text-center">
<button type="button" class="btn" id="submit">✔</button>
</div>
</div>
<br />
<!-- Screen list show -->
<div class="row" id="screen">
<div class="col-12">
<ul id="list">
</ul>
</div>
</div>
<!-- Note show -->
<div class="row" id="fullnote">
<div class="col-12">
<p id="text">
</p>
</div>
</div>
<!-- input for note title -->
<div class="row" id="input-title">
<div class="col">
<input type="text" maxlength="20" class="form-control" placeholder="Note title" value="" id="note-title">
</div>
</div>
<br />
<!-- textarea for writing note -->
<div class="row flex-grow-1">
<div class="col" id="main">
<textarea class="form-control textarea h-100" value="" placeholder="write note" id="note"></textarea>
</div>
</div>
<!-- footer -->
<div class="row align-items-end" id="footer">
<div class="col d-flex justify-content-start" style="padding: 10px; padding-left: 25px;">
<button id="add" class="btn btn-info rounded-circle"><h4 style="padding: 0px; margin: 0px;">+</h4></button>
<button id="delete" class="btn btn-info rounded-circle">🗑</button>
</div>
</div>
</div>
<script src="script.js"></script>
</body>
</html>
处理程序,它会在每个新项目上正确触发。如果我将多个项目放入数据库中,并且多次调用了我的回调,则有时onCreate
不会更新项目。
这是我的代码:
snap.ref.update
在这一点上,实际上有50-75%的项目已更新,但其他..我不知道为什么,但是它们有旧数据。每个函数返回200(我在日志中检查了)。
Firebase存储是否有限制?或者我缺少什么?
答案 0 :(得分:0)
我认为这里的问题是您的函数会更新它正在侦听的引用,因此,如果该位置上没有img1或img2子代,则会再次触发该函数本身。