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copied!<p>I would break this up into three steps:</p> <ol> <li>Iterate through the source document.</li> <li>Build a representative data structure.</li> <li>Build the output document.</li> </ol> <p>The resulting data structure in step #2 should look something like this:</p> <pre><code>{ '1{4}2{3}6': { name: 'product1', options: { '4': '2', '3': '6' } }, '1{4}3{3}5': { name: 'product1', options: { '4': '3', '3': '5' } }, '2{4}3{3}5': { name: 'product1', options: { '4': '3', '3': '5' } } } </code></pre> <p>To build the structure, try something like this with jQuery:</p> <pre><code>var data = {}; $('#input div').each(function() { var div = $(this); var productId = div.attr('products_id'); var optionId = div.attr('products_options_id'); if (!(productId in data)) data[productId] = { name: div.text(), options: {} }; if (!(optionId in data[productId].options)) { var optionValueId = div.attr('products_options_value_id'); data[productId].options[optionId] = optionValueId; } }); </code></pre> <p>Then, to build the output content, do this:</p> <pre><code>$.each(data, function(productId, product) { var productDiv = $('<div/>').attr('products_id', productId).appendTo('#output'); $('<p/>').text(product.name).appendTo(productDiv); $.each(product.options, function(optionId, optionValueId) { $('<p/>') .text( 'products_options_id_' + optionId + ' : products_options_value_id_' + optionValueId) .appendTo(productDiv); }); }); </code></pre> <p><a href="http://jsfiddle.net/K7UEA/1/" rel="nofollow">Here is a jsFiddle</a> showing the result.</p>

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