iOS new Date() 报invalid Date

var date = "2020-05-22";
var date_Replace = date.replace(/-/g,"/");
var new_date = new Date(date_Replace);

var y =  new_date.getFullYear();
var m = new_date.getMonth () + 1;
m = m < 10 ? "0" + m : m;
var d = new_date.getDate ();
d = d < 10 ? "0" + d : d;
var h = new_date.getHours ();
h = h < 10 ? "0" + h : h;
var mm = new_date.getMinutes ();
mm = mm < 10 ? "0" + mm : mm;
var new_date_Str = y +"-" + m + "-" + d + " "+ h + ":" + mm;