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Otherwise, the parameter itself will be added.</p> </li> </ol> </div> <div class="returns"> <h3 class="returns-title">Returns</h3> <p> <code>{<a href="list.html" title="Create observable lists.">can-define/list/list</a>}</code>: <p>A DefineList of the same type.</p> </p> </div> </div> <section class="body"> <h2>Use</h2> <p><code>concat</code> makes a new DefineList with the elements of the DefineList followed by the elements of the parameters.</p> <pre><code>var list = new DefineList(); var newList = list.concat( 'Alice', ['Bob', 'Charlie']), new DefineList(['Daniel', 'Eve']), {f: 'Francis'} ); newList.get(); // ['Alice', 'Bob', 'Charlie', 'Daniel', 'Eve', {f: 'Francis'}] </code></pre> </section> <script type="text/javascript"> var docObject = {"type":"function","name":"can-define/list/list.prototype.concat","parent":"can-define/list/list.prototype","src":{"line":771,"codeLine":801,"path":"node_modules/can-define/list/list.js"},"description":"Merge many collections together into a DefineList. 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