layui搜索框，监听为空，表格重新加载

var isSearch = false;
//输入框回车执行搜索
$("#keyWord").bind('keydown', function (event) {
if (event.keyCode == 13) {
insTb.reload({where: {searchKey: $('#keyWord').val()}});
isSearch = true;
return false;
}
});

        //监听搜索变化
        var keyWord = document.getElementById("keyWord");
        keyWord.oninput = function (e) {
            if (keyWord.value === '' || keyWord.value === null) {
                if (isSearch) {
                    insTb.reload({where: {searchKey: ''}});
                }
                isSearch = false;
            }
        };