 be before b where  <code class="qm-code-highlight-code qm-code-font">defined &lt; null &lt; undefined</code>  and 0 when the terms match. </div></div></div></div></div></div></div></div></div><div class="qm-api-item qm-api-javascript-property qm-api-collapsible"><div class="qm-api-collapsible-heading"><div class="qm-api-collapsible-toggle"><i class="qm-api-chevron-icon"></i></div><div class="qm-api-collapsible-head"><div class="qm-api-item-head"><div class="qm-api-item-header qm-api-item-header-function"><