SOURCE

var fullTime = "2020-12-11到2021-12-12"; // 日期字符串
    
    var timeArr1 = fullTime.split(/[-到]/);
    
    var cynian = timeArr1[0];
    var cyyue = timeArr1[1];
    var cyri = timeArr1[2];
    var cynian=timeArr1[3];
    var cyyue=timeArr1[4];
    var cyri=timeArr1[5];
    var time1 =nian+'-'+yue+'-'+ri;
    var time2 =x+'-'+y+'-'+z;
    
   

var mystring = "jb51.net,google.com,baidu.com_weibo.com_haotu.net";
var myarray = mystring.split(/[,_]/);
console.log(myarray)