mui框架怎么做4个菜单滑动的tab选项卡？模板只有3个的

var html4 = '<ul class="mui-table-view"><li class="mui-table-view-cell m_t_10">555555</li></ul>';
var item2 = document.getElementById('item2mobile');
var item3 = document.getElementById('item3mobile');
var item4 = document.getElementById('item4mobile');
document.getElementById('slider').addEventListener('slide', function(e) {
if (e.detail.slideNumber === 1) {
if (item2.querySelector('.mui-loading')) {
setTimeout(function() {
item2.querySelector('.mui-scroll').innerHTML = html2;
}, 500);
}
} else if (e.detail.slideNumber === 2) {
if (item3.querySelector('.mui-loading')) {
setTimeout(function() {
item3.querySelector('.mui-scroll').innerHTML = html3;
}, 500);
}
} else if (e.detail.slideNumber === 3) {
if (item4.querySelector('.mui-loading')) {
setTimeout(function() {
item4.querySelector('.mui-scroll').innerHTML = html4;
}, 500);
}
}
});