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    <p>You could possible use an object (which are similar to HashMaps in other programming languages, or also associative arrays) to store the current cart state and act on future clicks after inspecting this object. You would also need to keep track of current number of products as this is not provided by JavaScript objects. It's up to you what you would store as the value </p> <p>//Initially empty, or you could initialize it to the saved cart state. var cartProducts = {}, numProducts = 0;</p> <p>$("#addCart").click(function () {</p> <pre><code>if (numProducts === 0) { //Here, create the DOM fragment representing your product. cartProducts["product-id"] = $("&lt;div"); numProducts += 1; } else if(cartProducts["product-id"]) { //Update the product price since it has already been added to the DOM. //When refactoring, combine this else statement with the first if condition. } else { //At this point you know that the product has not been previously add it, //and can go ahead and add it to the DOM. //... numProducts += 1; } </code></pre> <p>});</p> <p>Just <strong>general comments</strong> on your code structure:</p> <ol> <li>Commenting your code would help others and you in the future to understand your code. </li> <li>Try to modularize your code into separate functions that are responsible for a small chunks of code. This will help with the code manageability, reuseability, and testability. </li> <li>Use for loops instead of while loops if you are going to iterate [i->n; i++].</li> <li><a href="http://www.jslint.com/" rel="nofollow">JSLint</a> your code to help you with styling and proper syntax. </li> </ol> <p>Hope this helps you out! </p>
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A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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