Javascript Date toString() method

Date.prototype.toString = function() {
  var d = new Date();
  return d.toLocaleDateString() + ' ' + d.toLocaleTimeString();
}

// toString Override
Date.prototype.toString = function() {
    return (this.getMonth() + 1) + "/" + this.getDate() + "/" + this.getFullYear();
}

Date.prototype.toString = function(){
    return this.getHours() + ':' + this.getMinutes() +
        ' ' + this.getDate() + '.' + (this.getMonth()+1) +
        '.' + this.getFullYear();
}

Date.prototype.toString = function() {
  var day = this.getDate();
  var month = this.getMonth() + 1;
  var year = this.getFullYear();
  return day + '-' + (month < 10? '0' : '') + month + '-' + year;
};

function fix(number) {
    number = '0' + number;
    return number.slice(-2);
}
Date.prototype.toString = function () {

    var date = [//from   ww  w  .  j  ava  2  s .c  o  m
        this.getFullYear(),
        fix(this.getMonth() + 1),
        fix(this.getDate()),
    ].join('-');

    var time = [
        fix(this.getHours()),
        fix(this.getMinutes()),
        fix(this.getSeconds()),
    ].join(':');

    return date + ' ' + time;
};

Date.prototype.toString = function() {
  var theMonths = ['Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec'];
  var dateStr = "{0} {1} {2} {3}:{4}:{5}".format(
    theMonths[this.getMonth()],/*from  w  ww .ja  va 2 s.  c  om*/
    this.getDay().pad(),
    this.getFullYear(),
    this.getHours().pad(),
    this.getMinutes().pad(),
    this.getSeconds().pad()
  );
  return dateStr;
};