jQuery循环不切换属性

Question

我有一个 jQuery 每个循环来遍历元素，但一旦状态已更改，它就不会更新。

<span class="btn btn-icon btn-rounded btn-info social_selector" data-network="twitter" data-account-id="1" data-active='1'>
<i class="fa fa-twitter"></i>
</span>
<span class="btn btn-icon btn-rounded indigo social_selector" data-network="facebook" data-account-id="1" data-active='1'>
<i class="fa fa-facebook"></i>
</span>
<span class="btn btn-icon btn-rounded btn-warning social_selector" data-network="instagram" data-account-id="1" data-active='1'>
<i class="fa fa-instagram"></i>
</span>

jQuery循环如下；

//Social Selector
    $(document).on('click','.social_selector',function(){

        if($(this).attr('data-active') == 1){
            $(this).addClass('btn-disabled');
            $(this).attr('data-active', 0);
        }else{
            $(this).removeClass('btn-disabled');
            $(this).attr('data-active', 1);
        }

        var networks = "";
        $(".social_selector").each(function(index, element){
            if($(element).data('active') == "1"){
                networks += $(element ).data('network')+', ';
            }
        });
        $('#social_network_holder').val(networks);

    });

当 jQuery 循环然后运行时，每次单击都会更改数据活动，所以我不确定是否是因为 Dom 在循环之间更新？

//Social Selector
$(document).on('click', '.social_selector', function() {

  if ($(this).attr('data-active') == 1) {
    $(this).addClass('btn-disabled');
    $(this).attr('data-active', 0);
  } else {
    $(this).removeClass('btn-disabled');
    $(this).attr('data-active', 1);
  }

  var networks = "";
  $(".social_selector").each(function(index, element) {
    if ($(element).data('active') == "1") {
      networks += $(element).data('network') + ', ';
    }
  });
  $('#social_network_holder').val(networks);

});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" integrity="sha384-1q8mTJOASx8j1Au+a5WDVnPi2lkFfwwEAa8hDDdjZlpLegxhjVME1fgjWPGmkzs7" crossorigin="anonymous">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js" integrity="sha384-0mSbJDEHialfmuBBQP6A4Qrprq5OVfW37PRR3j5ELqxss1yVqOtnepnHVP9aJ7xS" crossorigin="anonymous"></script>
<span class="btn btn-icon btn-rounded btn-info social_selector" data-network="twitter" data-account-id="1" data-active='1'>
    <i class="fa fa-twitter"></i>
    </span>
<span class="btn btn-icon btn-rounded indigo social_selector" data-network="facebook" data-account-id="1" data-active='1'>
    <i class="fa fa-facebook"></i>
    </span>
<span class="btn btn-icon btn-rounded btn-warning social_selector" data-network="instagram" data-account-id="1" data-active='1'>
    <i class="fa fa-instagram"></i>
    </span>

Answer 1

用attr()方法替换data()方法

   $(".social_selector").each(function(index, element){
        if($(element).attr('data-active') == "1"){
            networks += $(element ).data('network')+', ';
        }
    });

Answer 2

将您的代码更改为以下使用 .data('active') 而不是 .attr('data-active') 的代码，或者您可以将它们全部更改为 .attr('data-active')，无论哪种方式，只要确保它们都相同，你有一个不同的：

   $(document).on('click','.social_selector',function(){
        var $this=$(this);
        
        if($this.data('active') == 1){
            $this.addClass('btn-disabled');
            $this.data('active', 0);
        }else{
            $this.removeClass('btn-disabled');
            $this.data('active', 1);
        }

        var networks = "";
        $(".social_selector").each(function(index, element){
            if($(element).data('active') == 1){
                networks += $(element ).data('network')+', ';
            }
        });
        $('#social_network_holder').val(networks);

    });

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<span class="btn btn-icon btn-rounded btn-info social_selector" data-network="twitter" data-account-id="1" data-active='1'>twitter
<i class="fa fa-twitter"></i>
</span>
<span class="btn btn-icon btn-rounded indigo social_selector" data-network="facebook" data-account-id="1" data-active='1'>facebook
<i class="fa fa-facebook"></i>
</span>
<span class="btn btn-icon btn-rounded btn-warning social_selector" data-network="instagram" data-account-id="1" data-active='1'>instagram
<i class="fa fa-instagram"></i>
</span>
<input class="form-control" required="required" id="social_network_holder" name="social_networks" type="text">

Answer 3

看看我的 DEMO .

只需检查您是否需要这个

$(document).on('click','.social_selector',function(){

        if($(this).attr('data-active') == 1){
            $(this).addClass('btn-disabled');
            $(this).attr('data-active', 0);
        }else{
            $(this).removeClass('btn-disabled');
            $(this).attr('data-active', 1);
        }

        var networks = "";
        $(".social_selector").each(function(index, element){
            if($(element).attr('data-active') == 1){
                networks += $(element ).attr('data-network')+', ';
            }
        });
        $('#social_network_holder').val(networks);
alert(networks)
    });

jQuery循环不切换属性

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