js获取列表多条数据(接口)

读取数据：
//ajax去服务器端校验

$.ajax({

    type:"post",
    url:"http://",
    data:{deviceid:1},
    datatype:'json',
    success : function(data) {
        var jsontext = data;
        var ab= eval("("+jsontext+")");//json格式转换
        for(j=0;j<ab.length;j++){
            $(ab[j]).each(
                function (i, values) {
                    $("#list").append(
                        "<tr class='ch_no'><td>" + i+1 + "</td>" +
                        "<td style=\"padding-left: 5%;\">"  + values.isreign + "</td>" +
                        "<td style=\"padding-left: 5%;\">"+ values.gain + "</td>" +
                        "<td style=\"padding-left: 5%;\">" +
                        "<select id=\"outputpower\">\n" +
                        "     <option selected=\"selected\">"+values.outputpower+"</option>\n" +
                        "</select>" +
                        "</td>" +
                        "<td style=\"padding-left: 5%;\">" +
                        "<select id=\"forwardlinkrate\">\n" +
                        "     <option selected=\"selected\">"+values.forwardlinkrate+"</option>\n" +
                        "</select>"+
                        "<td style=\"padding-left: 5%;\">" +
                        "<select id=\"reverselinkrate\">\n" +
                        "      <option selected=\"selected\">"+values.reverselinkrate+"</option>\n" +
                        "</select>" +
                        "</td>" +
                        "<td style=\"padding-left: 5%;\">" +
                        "<select id=\"forwardmodtype\">\n" +
                        "      <option selected=\"selected\">"+values.forwardmodtype+"</option>\n" +
                        "</select>" +
                        "</td>" +
                        "<td style=\"padding-left: 5%;\">" +
                        "<select id=\"reversemodtype\">\n" +
                        "      <option selected=\"selected\">"+values.reversemodtype+"</option>\n" +
                        "</select>" +
                        "</td>" +
                        "<td style=\"padding-left: 5%;\">" +
                        "<select id=\"outputrate\">\n" +
                        "      <option selected=\"selected\">"+values.outputrate+"</option>\n" +
                        "      <option>不限</option>" +
                        "</select>" +
                        "</td></tr>"
                    );
                }
            );
        }
    }
});

保存数据：
$("#btnsubmit").on('click',(function () {
    var ab = new array();
    var ch_no = $('.ch_no');
    var adiv=document.getelementsbyclassname("ch_no");//获取文档中class为"ch_no"的所有元素

    for (var i = 0;i<adiv.length;i++) {//遍历 adiv的中所有元素并且将所有class为"ch_no"的元素保存到数组aerial

        var outputpower_con = $(ch_no[i]).find("#outputpower").find("option:selected").val();
        var forwardlinkrate_con = $(ch_no[i]).find("#forwardlinkrate").find("option:selected").val();
        var reverselinkrate_con = $(ch_no[i]).find("#reverselinkrate").find("option:selected").val();
        var forwardmodtype_con = $(ch_no[i]).find("#forwardmodtype").find("option:selected").val();
        var reversemodtype_con = $(ch_no[i]).find("#reversemodtype").find("option:selected").val();
        var outputrate_con = $(ch_no[i]).find("#outputrate").find("option:selected").val();
        aerial.push({
            outputpower: outputpower_con,
            forwardlinkrate: forwardlinkrate_con,
            reverselinkrate: reverselinkrate_con,
            forwardmodtype: forwardmodtype_con,
            reversemodtype: reversemodtype_con,
            outputrate: outputrate_con
        })
    }
    console.log(ab);
    $.ajax({
        url: "http://",//接口地址
        type:'post',
        data: ab,
        datatype: 'json',
        success : function(data) {
            console.log(data)
        },
        error : function() {
            alert('保存失败，请重试！ ');
        }
    })
})