title: Concatenate Strings in Knockout
body: <p>I need to concatenate a url parameter onto an anchor tag.  How would I go about insert it into the following template?</p>
  
  <pre><code>        &lt;tbody data-bind="foreach: Customers"&gt;
              &lt;tr class="rowEven"&gt;
                  &lt;td data-bind="text: Name"&gt;&lt;/td&gt;
                  &lt;td data-bind="text: CustomerType"&gt;&lt;/td&gt;
                  &lt;td&gt;&lt;a href="customers.aspx?customer=[CustomerAccountIDHere]"&gt;Manage&lt;/a&gt;&lt;a href="#"&gt;Guest Admin&lt;/a&gt;&lt;/td&gt;
              &lt;/tr&gt;
          &lt;/tbody&gt;
  </code></pre>
  
  <p>I tried this will no luck:</p>
  
  <pre><code>            &lt;tr class="rowEven"&gt;
                  &lt;td data-bind="text: Name"&gt;&lt;/td&gt;
                  &lt;td data-bind="text: CustomerType"&gt;&lt;/td&gt;
                  &lt;td&gt;&lt;a data-bind="attr: { href: 'customers.aspx?customer=' + CustomerAccount_BID}"&gt;Manage&lt;/a&gt;&lt;a href="#"&gt;Guest Admin&lt;/a&gt;&lt;/td&gt;
              &lt;/tr&gt;
  </code></pre>