function getUnixTime(dateStr){
var newstr = dateStr.replace(/-/g,’/’);
var date = new Date(newstr);
var time_str = date.getTime().toString();
return time_str.substr(0, 10);
}getUnixTime(‘2021-06-17 23:11:54’);
console.log(getUnixTime(‘2021-06-17 23:11:54’));//1623942714