javascript - jquery shows and hides "No data yet" based on the length of the returned data

Question

Request data from the background to render the front-end table. If the data length returned by the background is 0, "No data yet" will be displayed in the table. I have now written {code...} in html. Because in the initial state, this line is not displayed, so the isNoData class is written as display: none, but how to make it dynamic now...

某草草 · Answer

if (!result) {
    $('.isNoData').show()
} else {
    // 渲染数据
}

世界只因有你 · Answer

res = json_encode(['count'=>0]);
$.get('/path/to/file', function(res) {
    if(res.count == 0){
        $('. isNoData').show();
    }
});

给我你的怀抱 · Answer

$.ajax({//获取后台数据，默认异步
    cache:false,
    url:'url地址',
    type:'get',
    dataType:'json',
    beforeSend:function () {
        //注：同步ajax请求时，此处内容在IE浏览器不执行
        //展示过度动画
    },
    success:function (data) {
        if(data.length > 0){
            $('.isNoData').hide();//隐藏暂无数据的行
            //处理数据并展示
        }else{
            $('.isNoData').show();//显示暂无数据的行
        }
    }

})