JavaScript for E-Commerce

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Please note that this tutorial was first published in the year 2000, and is based on work conducted between 1997 and 2000. While we trust that it still constitutes useful tutorial material, it should not necessarily be construed as to impart best practice in the year 2019. For more details please see this blog post.

Framework - product.html

The product.html file includes a drop down list where the user can select the desired product type.




function selectProduct() {
    var e = document.productForm.selProduct;
    parent.categoryFrame.location = e.options[e.selectedIndex].value;
    parent.itemFrame.location = "item-initial";



<form name="productForm">

<font size="-1">Product:<br></font>

<select name="selProduct" onChange="selectProduct();">
    <option value="cat-cd.html">CDs</option>
    <option value="cat-record.html">Records</option>
    <option value="cat-tape.html">Tapes</option>





The drop down list defined here has three options labelled "CDs", "Records" and "Tapes".

When the user selects a new product type, the function selectProduct is called. This function loads the HTML file specified by the value of the selected option into the category frame. The item-initial.html file is then loaded into the item frame.

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This tutorial has been translated to Serbo-Croatian language by Jovana Milutinovich from

This tutorial has been translated to Slovak by Juraj Rehorovsky from Coupofy team.

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