 for each progress bar in your page. This object provides methods to get and set the value of the progressbar. </div><div class="qm-html-paragraph">This prototype is not exposed directly. Use  <code class="qm-code-highlight-code qm-code-font">hx.ProgressBar</code> </div></div><div class="qm-api-group qm-api-constructor-group"><div class="qm-api-group-header qm-api-constructor-group-header qm-header-font">Constructors</div><div class="qm-api-item qm-api-javascript-constructor qm-api-collapsible"><div class="