如何将Firestore文档中的所有数据显示为html元素

问题描述 投票:0回答:2

我正在设计一个将从Firestore集合中获取数据并显示每个文档及其相应字段的网页这是代码:

<html>
<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>Stations</title>

    <script src="https://www.gstatic.com/firebasejs/7.2.3/firebase-app.js"></script>
    <script src="https://www.gstatic.com/firebasejs/7.2.3/firebase-firestore.js"></script>

    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css"
        integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
    <script src="https://code.jquery.com/jquery-3.2.1.slim.min.js"
        integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN"
        crossorigin="anonymous"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js"
        integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q"
        crossorigin="anonymous"></script>
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"
        integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl"
        crossorigin="anonymous"></script>


        <script>
                firebase.initializeApp({
                    apiKey: "XXXXXXXXXXXXX",
                    authDomain: "XXXXXXXXXXXXXX",
                    projectId: "XXXXXXXXXXX",
                });

                const db = firebase.firestore();
                db.settings({ timestampsInSnapshots: true });


                window.onload = function(){
                db.collection('Nairobi').get().then((snapshot) => {

                    // var data = snapshot.data();
                    snapshot.forEach(function (child) {
                        var name_loc = child.id;
                        var loc = child.data().marker;
                        var forward = child.data().ForwardPower;
                        var reflected = child.data().ReflectedPower;

                        var ups = child.data().UPSError;
                        var upsDesc = child.data().UPSDesc;
                        var trans = child.data().TransmitterError;
                        var transDesc = child.data().TransDesc;




                    document.getElementById('station').innerHTML = name_loc;
                    document.getElementById('forward').innerHTML = 'Forward Power:' + forward;



                    })
                })
                }



            </script>



</head>

<body>

    <nav class="navbar navbar-dark bg-primary">
        <a class="navbar-brand" href="#">Radio Africa</a>
        <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent"
            aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
            <span class="navbar-toggler-icon"></span>
        </button>

        <div class="collapse navbar-collapse" id="navbarSupportedContent">
            <ul class="navbar-nav mr-auto">
                <li class="nav-item">
                    <a class="nav-link" href="./trialmap.php">Maps</a>
                </li>
                <li class="nav-item active">
                    <a class="nav-link" href="./stations.php">Stations <span class="sr-only">(current)</span></a>
                </li>

                <li class="nav-item dropdown">
                    <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button"
                        data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
                        Dropdown
                    </a>
                    <div class="dropdown-menu" aria-labelledby="navbarDropdown">
                        <a class="dropdown-item" href="#">Action</a>
                        <a class="dropdown-item" href="#">Another action</a>
                        <div class="dropdown-divider"></div>
                        <a class="dropdown-item" href="#">Something else here</a>
                    </div>
                </li>

        </div>
    </nav>



    <div id="accordion">
        <div class="card">
            <div class="card-header" id="headingOne">
                <h5 class="mb-0">
                    <button id="station" class="btn btn-link" data-toggle="collapse" data-target="#collapseOne" aria-expanded="true"
                        aria-controls="collapseOne">

                    </button>
                </h5>
            </div>

            <div id="collapseOne" class="collapse show" aria-labelledby="headingOne" data-parent="#accordion">
                <div class="card-body">
                    <p id="forward"> </p>
                </div>
            </div>
        </div>

    </div>





</body>



</html>

我的Firestore集合的结构如下:document1

这个想法是获取文档的名称,并将其显示为具有id =“ station”的按钮的名称,并获取Forwardpower并同时显示它。

但是在加载页面时,仅显示一个文档,并且控制台中没有错误。image

javascript html firebase google-cloud-firestore
2个回答
0
投票

您正在用循环替换AN元素的内容。结果将仅显示在最后一行。

似乎您正在尝试列出清单。这是示例:

<!-- Consider your list in HTML -->
<div id="station"></div>
<div id="station_box"></div>

<script>
db.collection('Nairobi').get().then((s) => {
   $("#station").html(""); // This will empty your station button
   $("#station_box").html(""); // This will empty your station box
   var n = 0;
   s.forEach(function(x){
      $("#station").append(`
          <button class="btn btn-link" data-toggle="collapse" data-target="#collapse`+ n+`" aria-expanded="true" aria-controls="collapse`+ n +`">`+ x.id +`</button>
      `);

      $("#station_box").append(`
<div id="collapse`+ n +`" class="collapse show" aria-labelledby="headingOne" data-parent="#accordion">
   <div class="card-body">
      <p>`+ x.data().ForwardPower</p>
   </div>
</div>

`);
      n += 1;
   });
});
</script>

0
投票
`window.onload = function(){
   db.collection('Nairobi').get().then((snapshot) => {
     let i = 0;
     snapshot.forEach(function (child) {
       var name_loc = child.id;
       var loc = child.data().marker;
       var forward = child.data().ForwardPower;
       var reflected = child.data().ReflectedPower;

       var ups = child.data().UPSError;
       var upsDesc = child.data().UPSDesc;
       var trans = child.data().TransmitterError;
       var transDesc = child.data().TransDesc;
       document.getElementById('station' + i).innerHTML = name_loc;
       document.getElementById('forward' + i).innerHTML = 'Forward Power:' + forward;



    })
})}`

其中i是索引。您需要多个HTML元素来显示多个项目

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