src/dual-listbox.js
/**
     * @Private
     * Builds the Dual listbox and makes it visible to the user.
     */
@Private
Builds the Dual listbox and makes it visible to the user.
@Private Builds the Dual listbox and makes it visible to the user .
_buildDualListbox(container) {
        this.select.style.display = "none";
        this.dualListBoxContainer.appendChild(
            this._createList(
                this.search_left,
                this.availableListTitle,
                this.availableList
            )
        );
        this.dualListBoxContainer.appendChild(this.buttons);
        this.dualListBoxContainer.appendChild(
            this._createList(
                this.search_right,
                this.selectedListTitle,
                this.selectedList
            )
        );
        this.dualListbox.appendChild(this.dualListBoxContainer);
        container.insertBefore(this.dualListbox, this.select);
    }
_buildDualListbox ( container ) { this . select . style . display = "none" ; this . dualListBoxContainer . appendChild ( this . _createList ( this . search_left , this . availableListTitle , this . availableList ) ) ; this . dualListBoxContainer . appendChild ( this . buttons ) ; this . dualListBoxContainer . appendChild ( this . _createList ( this . search_right , this . selectedListTitle , this . selectedList ) ) ; this . dualListbox . appendChild ( this . dualListBoxContainer ) ; container . insertBefore ( this . dualListbox , this . select ) ; }
@Private
 Builds the Dual listbox and makes it visible to the user.
@Private Builds the Dual listbox and makes it visible to the user .