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grocerylist.js
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$(function() {
var callback = function(event) {
event.preventDefault();
var input = $('input[type=text][name=item]'),
value = input.val(),
need = ($(event.target).attr('id') === 'addNeed'),
item = $('<li><input type="checkbox" name="item"> ' + value + ' <a href="#">remove</a></li>'),
list = (need) ? $('ul').first() : $('ul').last();
input.val("");
input.focus();
if (value === "") return;
if (!need) {
item.find('input').attr('checked', true);
}
item.appendTo(list);
}
$('#addHave, #addNeed').click(callback);
$('ul').on('click', 'li a', function(event){
$(event.target).parent('li').remove();
});
$('ul').on('click', 'input[type=checkbox]', function(event){
var listItem = $(event.target).parent('li'),
list = (event.target.checked) ? $('ul').last() : $('ul').first();
listItem.appendTo(list);
});
});