向数组添加和删除复选框值不起作用

Question

我以前这样做过，但由于某些原因，我当前的实现不起作用。

我有一些复选框，单击时，我希望将该值放入一个数组中。再次单击该复选框时，我想删除该值。

HTML:

<div class="fieldwrap form-filters">
  <label for="filter0" class="icon-text checkbox">
      <input type="checkbox" id="filter0" name="filter0" value="Coast" class="hidden" />
    Coast</label>
  <label for="filter1" class="icon-text checkbox">
      <input type="checkbox" id="filter1" name="filter1" value="Great views" class="hidden" />
    Great views</label>
  <label for="filter2" class="icon-text checkbox">
      <input type="checkbox" id="filter2" name="filter2" value="Historic" class="hidden" />
    Historic</label>
  <label for="filter3" class="icon-text checkbox">
      <input type="checkbox" id="filter3" name="filter3" value="Moorland" class="hidden" />
    Moorland</label>
  <label for="filter4" class="icon-text checkbox">
      <input type="checkbox" id="filter4" name="filter4" value="Wildlife" class="hidden" />
    Wildlife</label>
  <label for="filter5" class="icon-text checkbox">
      <input type="checkbox" id="filter5" name="filter5" value="Woodland" class="hidden" />
    Woodland</label>
</div>

JS：

var filter_options = [];

$('.form-filters input:checkbox').click(function() {

    var name = $(this).val().trim();
    var index = filter_options.indexOf(name);
    if (index > -1) {
        filter_options = filter_options.slice(index, 1);
        console.log('Remove: '+name+' at index: '+index);
    } else {
        filter_options.push(name);
        console.log('Add: '+name);
    }

    $('#result').html(filter_options.join('; '));
    console.log(filter_options);

});

演示： http://jsfiddle.net/WTzKR/873/

出于某种原因，它似乎随机删除了值，但似乎总是添加它们。

我做错了什么？

Answer 1

试试这个：

<script>
        var filter_options=[];
        $('.form-filters input:checkbox').click(function()
        {
            var name=$(this).val().trim();
            if(this.checked)
            {
                filter_options.push(name);
                console.log('Add: ' + name);
            }
            else
            {
                var index=filter_options.indexOf(name);
                if(index > -1)
                {
                    filter_options.splice(index, 1);
                    console.log('Remove: ' + name + ' at index: ' + index);
                }
            }
            $('#result').html(filter_options.join('; '));
            console.log(filter_options);
        });
    </script>

Answer 2

尝试 input:checkbox:checked 选择器只获取选中的：

var filter_options = [];

$('.form-filters input:checkbox').click(function() {
    filter_options = $('.form-filters input:checkbox:checked').map(function(){
      return this.value; //get the checkbox value
    }).get();//get all values as array
    $('#result').html(filter_options.join('; '));
    console.log(filter_options);
});

Answer 3

只需更改：

filter_options = filter_options.slice(index, 1);

至

filter_options.splice(index, 1);

在你的 if 区块中。

splice 就是您要找的。

Answer 4

var filter_options = [];

$('.form-filters input:checkbox').click(function() {
 filter_options = [];
 $('.form-filters input:checkbox').each(function(idx, obj) {
        if($(obj).is(":checked"))
            filter_options.push($(obj).val());
    });
 $('#result').html(filter_options.join('; '));
 console.log(filter_options);
 
});

向数组添加和删除复选框值不起作用

Adding and removing checkbox values to an array not working

javascript

arrays

checkbox

jquery