Question

I got this js (also tried “change” with same result)

$("input[class='tag-checkbox']").live("click",function(){
    var thisCheck = $(this);
    if (thischeck.is (':checked')){
        var tag = $(this).val();
        $("#tag-field").val(tag);
        return false;
    }
});

which should set the value of this checkbox

<input class="tag-checkbox" type="checkbox" name="tag[]" value="' . $value['name'] . '" />

into this textfield

<input id="tag-field" type="text" name="product-tag" />

But the event is not fired and the textfield is unchanged. I have no error messages so is something wrong with the script?

Answer 1

try using directly $(this) :

$("input[class='tag-checkbox']").live("click",function(){

    if ($(this).is (':checked')){
        var tag = $(this).val();
        $("#tag-field").val(tag);
        return false;
    }
});

working example at : http://jsfiddle.net/hZVwE/

anyway the problem in your script is that you made a typo on thisCheck (once C is capital and then is not)