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Getting the CURRENT value of the onclick flag

From what I can say, having read everything I can find here, this seems impossible, but I just thought that I would ask.

What I want to do is to prevent the checkbox from performing the default action to switch and run the function. This function must know the CURRENT state flags - as opposed to the state it will be in after the click event has switched, and so that this switch is prevented.

So let's say I have this input, for example

<input type="checkbox" onclick="setDefault(this);return false;" />

And the setdefault function looks something like this:

function setDefault(el) {
    if(jQuery(el).is(':checked'))
        {
        alert('Turning current default off- setting default to Home settings');
        jQuery(el).prop('checked',false);
        return; 
        }
    else
        {
        alert('setting a new default');
        jQuery(el).prop('checked',false);
        return; 
        }
}

When this starts, it gets the status the checkbox has been changed to, and what I need is for it not to change the status, find out its current status and then decide what to do.

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+2

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