javascript無法顯示警報

Question

我有一個html元素，我想在單擊“ i”元素時顯示警報。 當將具有“ innerNotif”類的div直接放在DOM上時，它可以工作，但是當我使用socket.on添加div時，則不起作用。 我認為這是因為元素在加載時不在DOM中。

<span class="disNone notificationMenuCss" id="notifBar">
   <div class="innerNotif" id="idNatif">1<i class="fa fa-times" on-click="removeNotif" aria-hidden="true"></i></div>
</span>

<script>
var socket = io.connect();
var notifId = 0;

socket.on('libCourtLotChangeServ', function(){
        var numItems = $('.innerNotif').length +1;

    $( "#notifBar" ).append( '<div class="innerNotif" id="id' + notifId +'"><i class="fa fa-times" on-click="removeNotif" aria-hidden="true"></i></div>');
    notifId++;
    $("#notificationNumber").html(numItems);
});
</script>

<script>
    Polymer({
        alertNotif: function() {
            alert('Test');
        }
    });
</script>

Answer 1

新行字符破壞了您要附加的字符串。

這應該工作：

$( "#notifBar" ).append( '<div class="innerNotif" id="id' + notifId + '"><i class="fa fa-times" on-click="removeNotif" aria-hidden="true"></i></div>'); 

Answer 2

試試這個我編輯過的代碼。

<span class="disNone notificationMenuCss" id="notifBar">
   <div class="innerNotif" id="idNatif">1<i class="fa fa-times" on-click="removeNotif" aria-hidden="true"></i></div>
</span>

<script>
var socket = io.connect();
var notifId = 0;

socket.on('libCourtLotChangeServ', function(){
        var numItems = $('.innerNotif').length +1;

    $( "#notifBar" ).append( '<div class="innerNotif" id="id' + notifId + '"><i class="fa fa-times" on-click="removeNotif" aria-hidden="true"></i></div>');
    notifId++;
    $("#notificationNumber").html(numItems);
});
</script>

<script>
    Polymer({
        alertNotif: function() {
            alert('Test');
        }
    });
</script>

Answer 3

我最終找到了一個解決方案，方法是添加父元素的onclick函數並在其上添加addEventListener

<paper-toolbar class="header" on-click="removeNotif">
    <div class="notification" on-click="notificationMenu">
        <span class="notificationSpan" id="notificationNumber"></span>
        <span class="disNone notificationMenuCss" id="notifBar"></span>
    </div>
</paper-toolbar>

<script type="text/javascript">
var socket = io.connect();
var notifId = 0;

socket.on('libCourtLotChangeServ', function(contrat){
    var numItems = $('.innerNotif').length +1;
    $( "#notifBar" ).append( '<div class="innerNotif" id="id' + notifId +'" style="width: 96%; height: 30px; text-align: left; border: 1px solid black; background-color: white; padding: 3px;">' + 'Le contrat <br>' + contrat + ' a été modifié ' + '<i class="fa fa-times" on-click="removeNotif" aria-hidden="true"></i></div>');
    notifId++;
    $("#notificationNumber").html(numItems);
});
</script>

<script>
 Polymer({
     removeNotif: function() {
         var idValue = Number(($(".innerNotif:last").attr("id")).replace("id", "0")); 
         console.log(idValue);
         for (var numItemsCheck = 0; numItemsCheck <= idValue; numItemsCheck++){ 
             document.querySelector("#id" + numItemsCheck).addEventListener("click", function(){
                 var numItems = $('.innerNotif').length -1;
                 $("#notificationNumber").html(numItems);
                 this.remove();
              })
          }
      }
  });
  </script>