Question

 $('#remove').click(function() {
        var foo = [];
        $('#FeatureLists :selected').each(function(i, selected) {
            foo[i] = $(selected).text();
            alert(foo[i]);
            if (foo[i] != "Add" )
                return !$('#FeatureLists option:selected').remove();
            if (foo[i] != "Edit")
                return !$('#FeatureLists option:selected').remove();
        });

    });

我的选择中有六个项目，其中4个是添加，编辑，删除视图，它是多选列表，我不希望用户删除这4个项目，除此之外他们可以删除任何项目。我该怎么做？它不会发生在上面的代码中

Answer 1

首先，根据您的示例代码，似乎不需要数组foo。其次，if语句需要包含需要用OR条件排除的所有项目，如下所示：

if (foo[i] == "Add"    || 
    foo[i] == "Edit"   || 
    foo[i] == "Delete" || 
    foo[i] == "View")
{
     return;             
}
else
{
     $(selected).remove();
}

Answer 2

试试这个。简单的一行代码和稍快的

$(document).ready(function() {
         $("input").click(function(event) {
            var foo = [];
            $('#FeatureLists :selected').each(function(i, selected) {
               foo[i] = $(selected).text();
               if (foo[i] != "Add" && foo[i] != "Edit" && foo[i] != "Delete" && foo[i] != "View") return $(selected).remove();
            });
         });
      });

asp.net mvc jquery删除选择列表项

2 个答案: