当渲染选择了select，重加载渲染table时，select会默认。为了改变这个默认值，变成自己先择的值。代码如下：

form.on('select(selectFilter)', function (data) {
            
            table.reload("idTest", {
                where: {methodseq:data.value},
                page: {curr: 1},
                done:function(res, curr, count){
                    layui.each($("select[name='methodseq']"), function (index, item) {
                        var elem = $(item);
                        console.log(elem.val());
                        elem.val(data.value);
                    });

                    form.render('select');
                }
            });
        });