乾草我有一個從createElement函數排序div的問題。排序javaScript創建div
問題: 創建從中行對齊數據庫項目的div(上月底最新的項目)
我想要什麼: 顯示在反方向的項目。添加到數據庫的最新項目應該顯示爲流中的第一項(如facebook上的newsstream)。
問題: 如何更改div的加載/創建方向?
此外,我想過一種技術,將個人ID設置爲創建的每個div,以便隨後通過ID對ID進行排序(ID可以是正在進行的數字)。 我發現這一個,但它鴕鳥政策作品,而我不遞增的ID號:Javascript create divs with different ids
我知道有很多類似這樣的問題上計算器,我試了幾個之前,沒有成功我的問題。
看看我的代碼:
//create firebase reference
var dbRef = new Firebase("….com/");
var contactsRef = dbRef.child('contacts')
//load all contacts
contactsRef.on("child_added", function(snap) {
//console.log(snap.val())
snap.forEach(function(childSnapshot) {
var key = childSnapshot.key();
var childData = childSnapshot.val();
var divCount = 0;
//create divs from database-elements
var card = document.createElement('div');
card.id = 'div'+divCount;
card.setAttribute('class', 'linkprev');
document.body.appendChild(card);
var cardtitle = document.createElement('div');
cardtitle.setAttribute('class', 'cardtitle');
cardtitle.innerHTML = childData;
card.appendChild(cardtitle);
document.guteUrls.execute();
divCount++;
console.log(event);
//linkify plugin to convert div-elements (strings) to hyperlinks
$('div').linkify();
$('#sidebar').linkify({
target: "_blank"
});
});
});
//save contact
document.querySelector(".addValue").addEventListener("click", function(event) {
event.preventDefault();
if(document.querySelector('#url').value != '' && document.querySelector('#url').value.charAt(0) == "h" && document.querySelector('#url').value.charAt(3) == "p"){
contactsRef.push({
name: document.querySelector('#url').value,})
contactForm.reset();}
else {
alert('Oops, seems like an error…');
}
}, false);
<!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">
<!-- The above 3 meta tags *must* come first in the head; any other head content must come *after* these tags -->
<title>frontendpublishing-test</title>
<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css">
<link rel="stylesheet" href="http://cdn.embed.ly/jquery.preview-0.3.2.css" />
<link href="css/flexboxgrid.min.css" rel="stylesheet">
<style type="text/css">
#contacts p,
#contacts p.lead{
margin: 0;
}
</style>
</head>
<body>
<div class="container">
<h1>Titel h1</h1>
<hr/>
<div class="row">
<div class="col-md-6">
<form method="post" name="contactForm">
<div class="form-group">
<input id="url" type="url" required name="url" placeholder="share a good article/blog/topic" class="input">
<button type="submit" class="btn btn-primary addValue">Submit</button>
</form>
<!-- <script>
$document.ready(function){
document.getElementsByClassName('linkified');
{console.log("linkified")};
};
</script>
-->
<!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
<!-- Latest compiled and minified Bootstrap -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>
<!-- Include Firebase Library -->
<script src="https://cdn.firebase.com/js/client/2.2.3/firebase.js"></script>
<!-- Contacts Store JavaScript -->
<script src="script.js"></script>
<script src="linkify.min.js"></script>
<script src="linkify-jquery.min.js"></script>
<link rel="stylesheet" href="style.css" type="text/css" media="screen" />
<script async src="https://guteurls.de/guteurls.js"
selector='.linkprev'
gif="http://loading.io/assets/img/default-loader.gif"
callback-a="(function(jqueryElement,url,$){console.log('url:'+url)})"
callback="(function($){console.log('finished')})"
init="(function($){console.log('JS will start to search URLs now')})"
></script>
</body>
</html>
感謝您的幫助:)
爲什麼不用SQL對它進行排序? –
問題太簡單了: 因爲我不知道該怎麼辦。 我希望有一個簡單的方法使用jquery/javaScript。 我將看看它如何與SQL一起工作。 感謝到目前爲止 – bengraf
您可以簡單地添加到您的SQL語句'ORDER BY DESC' –