Select all checked checkboxes with similar id's using Jquery?_问答_开发者

Select all checked checkboxes with similar id's using Jquery?

开发者 https://www.devze.com 2023-02-09 01:20 出处：网络

This might be the easiest question of the day. i have a groups of checkboxes wit开发者_JS百科h similar id\'s (all starting with someid_ like someid_0,someid_1..)

This might be the easiest question of the day.

i have a groups of checkboxes wit开发者_JS百科h similar id's (all starting with someid_ like someid_0,someid_1..)

i want to get all checked checkboxes.

I have tried $('input:checkbox[id^="someid_"]:checked') but it's not working?

this code is working check demo

http://jsfiddle.net/csTpG/

Markup

<input type="checkbox" id="someid_1" checked/>
<input type="checkbox" id="someid_2" checked/>
<input type="checkbox" id="someid_3" checked/>
<input type="checkbox" id="someid_4"/>

jQuery

var n = $('input:checkbox[id^="someid_"]:checked').length;
alert(n); // count of checked checkboxes

$('input:checkbox[id^="someid_"]:checked').each(function(){
    alert($(this).attr("id"));});

<head>
    <script type="text/javascript" src="../js/jquery.js"></script>
    <script type="text/javascript">
        var isChecked = false;

        function allSelected() 
        {
            // this line is for toggle the check
            isChecked = !isChecked;

            //below line refers to 'jpCheckbox' class
            $('input:checkbox.jpCheckbox').attr('checked',isChecked);

            //OR,
            //$('input:checkbox.jpCheckbox').attr('checked','checked');
        }
    </script>
</head>

<body>
    <form>
        Select All<input type="checkbox" id="selectAllCheckbox" onclick="allSelected()" /><br/>

        A<input type="checkbox" id="jpCheckbox" class="jpCheckbox" /><br/>
        B<input type="checkbox" id="jpCheckbox" class="jpCheckbox" /><br/>
        C<input type="checkbox" id="jpCheckbox" class="jpCheckbox" /><br/>
    </form>
</body>

I'm not sure if you can do a search on the ID attribute. it usually returns only one value. You can set the class to some_0 instead and then search or use a custom attribute like

<input type=checkbox customattr=some_1>

the code you tried is absolutely correct, may b the code ran before parsing the required elements so try,

$(document).ready(function(){$('input:checkbox[id^="someid_"]:checked')})

try this...

$('input:checkbox').filter('#someid').attr(":checked")

Select all checked checkboxes with similar id's using Jquery?

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