var $field = $(this);
if ($field.is('input')) {
alert(1);
if ($field.attr('type') == 'checkbox') {
alert(2);
if ($field.attr('value') == "true")
return $field.attr('checked');
}
return $field.val();
}
I want to check if value of checkbox is true i add attribute checked = checked for checkbox. but my code is wrong. please help me.thanks
You can use the :checked selector to greatly help with this.
var $field = $(this);
return $field.is(':checked');
This will return a proper bool. If you return the attr('checked') or the val(), you'll end up with a string, which is probably not what you want.
Change the condition to
$("input:checkbox").val() == "true"
and for checking the checkbox you can use
$("input:checkbox").attr ( "checked" , true );
You can select a checkbox using
$("input:checkbox")
and value using
$("input:checkbox").val()
If you want to check all the checkboxes with attribute value true then you can use
$(document).ready ( function ()
{
var checkBoxes = $("input:checkbox");
checkBoxes.each ( function () {
if ( $(this).val() == "true" )
{
$(this).attr ( "checked" , true );
}
});
});
.attr('checked')
will return true for checked and undefined for unchecked
CORRECTION:
.attr("checked")
will return "checked" if checked (not true), "undefined" if not checked.
If you want a true/false then you have to do something like this:
$("#checker").attr("checked")=="checked"
