var arr_wx = ['18108804492','15326754236']; //微信号
var arr_username = ['小琳','小王']; //姓名
var arr_sex = ['她','他']; //性别

var wx_index = Math.floor((Math.random() * arr_wx.length)); 

var wx = arr_wx[wx_index];
var username = arr_username[wx_index];
var sex = arr_sex[wx_index];

$(".wx").html(wx);
$(".username").html(username);
$(".sex").html(sex);