阻止bootstrap popover清除内容

<button type="button" class="btn btn-primary" data-toggle="popover" data-trigger="manual" data-content="Popover Content">Toggle Popover</button>

$('[data-toggle="popover"]').popover({
    trigger: 'manual'
}).on('click', function () {
    $(this).popover('show');
}).on('mouseleave', function () {
    var _this = this;
    setTimeout(function () {
        $(_this).popover('hide');
    }, 200);
});

<button type="button" class="btn btn-primary" onclick="togglePopover()">Toggle Popover</button>
<div id="popoverContent" style="display: none;">Popover Content</div>

function togglePopover() {
    var popoverContent = document.getElementById('popoverContent');
    if (popoverContent.style.display === 'none') {
        popoverContent.innerHTML = 'Popover Content';
        popoverContent.style.display = 'block';
    } else {
        popoverContent.innerHTML = '';
        popoverContent.style.display = 'none';
    }
}