Select All checkboxes using jQuery

Question

I have the following html code:

Answer 1

Here is a simple way to do this :

Html :

<input type="checkbox" id="selectall" class="css-checkbox " name="selectall"/>Selectall<br>
<input type="checkbox" class="checkboxall" value="checkbox1"/>checkbox1<br>
<input type="checkbox" class="checkboxall" value="checkbox2"/>checkbox2<br>
<input type="checkbox" class="checkboxall" value="checkbox3"/>checkbox3<br>

jquery :

$(document).ready(function(){
$("#selectall").click(function(){
        if(this.checked){
            $('.checkboxall').each(function(){
                $(".checkboxall").prop('checked', true);
            })
        }else{
            $('.checkboxall').each(function(){
                $(".checkboxall").prop('checked', false);
            })
        }
    });
});

Answer 2

use this

if (this.checked)
   $(".checkBoxClass").attr('checked', "checked");
else
   $(".checkBoxClass").removeAttr('checked');

also you can use prop please check http://api.jquery.com/prop/

Answer 3

Use prop() instead -

$(document).ready(function () {
        $("#ckbCheckAll").click(function () {
            $(".checkBoxClass").each(function(){
                if($(this).prop("checked", true)) {
                    $(this).prop("checked", false);
                } else {
                    $(this).prop("checked", true);
                }                
            });
        });
    });

BUT I like @dmk's much more compact answer and +1'd it

Answer 4

checkall is the id of allcheck box and cb-child is the name of each checkboxes that will be checked and unchecked depend on checkall click event

$("#checkall").click(function () {
                        if(this.checked){
                            $("input[name='cb-child']").each(function (i, el) {
                                el.setAttribute("checked", "checked");
                                el.checked = true;
                                el.parentElement.className = "checked";

                            });
                        }else{
                            $("input[name='cb-child']").each(function (i, el) {
                                el.removeAttribute("checked");
                                el.parentElement.className = "";
                            });
                        }
                    });

Answer 5

$(document).ready(function () {
    $(".class").on('click', function () {
        $(".checkbox).prop('checked', true);
    });
});

Answer 6

$(document).ready(function(){
$('#ckbCheckAll').click(function(event) { 
            if($(this).is(":checked")) {
                $('.checkBoxClass').each(function(){
                    $(this).prop("checked",true);
                });
            }
            else{
                $('.checkBoxClass').each(function(){
                    $(this).prop("checked",false);
                });
            }   
    }); 
    });