how Mark Checkboxes after create a dynamic form in PHP using JQuery,

Question

I am trying to check some checkboxes based on it value. In my code, I can update the database using this ckbxs, but when I try load the updated date, the status is showed as uncheck. So, I am trying to read the html, after create the form, to check the values and then check the ckbx. What can I do here to fix it? Thanks in advance

$(document).ready(function(){
    $('input[type=checkbox]').each(function () {
       if (this.value == 1) {
            (function(){this.attr('checked', true);})
        }
    } )
})

Not every version of jQuery supports the attribute selector correctly when the value of the attribute is unquoted. YMMV. — kojiro
– kojiro, Commented Oct 20, 2011 at 3:53

Will · Accepted Answer · 2011-10-20 03:46:42Z

1

You need to enclose the thiss in a $( ) and change value to val().

$(document).ready(function(){
    $('input[type=checkbox]').each(function () {
       if ($(this).val() == 1) {
            $(this).attr('checked', true);
       }
    });
});

answered Oct 20, 2011 at 3:46

Will

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3 Comments

Will Over a year ago

You can add an onchange event to each checkbox and set the value based on whether it is checked or not

omalukinho Over a year ago

its work fine, but know i have a new problem. could you revise please ? Is not possible to set the value as 0. It is always returning 1. ` $(document).ready(function(){ $('input:checkbox').change(function() { $.post('update.php', { id: this.id, value: $(this).attr("checked")?1:0 }, function(data){ $('#display').html(data.returnValue) if(data.success) { } else { } }, 'json'); return false; }); $('input[type=checkbox]').each(function () { if ($(this).val() == 1) { $(this).attr('checked', true); } }); });`

Will Over a year ago

Attributes are string values, so testing for a not-empty string will always return true whether the value is "true" or "false". Try changing $(this).attr("checked")?1:0 to $(this).attr("checked")=="true"?1:0

kojiro · Accepted Answer · 2011-10-20 03:51:35Z

0

$(document).ready(function () {
    $('input[type="checkbox"][value="1"]').each(function () {
        $(this).attr('checked', true);
    });
});

answered Oct 20, 2011 at 3:51

kojiro

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Comments

omalukinho · Accepted Answer · 2011-10-20 21:09:35Z

0

Thanks Willian, now I am using a onChange and I got what I need...

function changerCB(idCheck){

$(document).ready(function() {
$.post('ajaxUpdate.php', {
    id: document.getElementById(idCheck).id,
    value: document.getElementById(idCheck).checked?1:0
    }, function(data){
        $('#display').html(data.returnValue)
        if(data.success) {              
    } else {
    }
}, 'json');
return false;  
}); 
}

answered Oct 20, 2011 at 21:09

omalukinho

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