Nodejs Utililty Methods Array Remove Item

Array.prototype.remove = function(item) {
  var newArray = [];
  if (this.indexOf(item) === -1) {
    return this;
  } else {
    for (var i = 0; i < this.length; i++) {
      if (this[i] !== item) {
        newArray.push(this[i]);
  return newArray;
};

Array.prototype.remove = function(item)
  var p = this.indexOf(item);
  if(p != -1)
    this.splice(p,1);
};

Array.prototype.remove = function(item){
  if (this.contains(item)) return this.splice(this.indexOf(item), 1);

Array.prototype.remove = function (itemToRemove) {
    var i,
        len = this.length;
    for (i = 0; i < len; i += 1) {
        if (this[i] === itemToRemove) {
            this.splice(i, 1);
};
...

Array.prototype.remove = function(num) {
  this[num] = null;
  return this;
};

var arr = [1, 2, 1, 4, 1, 3, 4, 1, 111, 3, 2, 1, '1'];
Array.prototype.remove = function(numToRemove) {
    var i;
    for (i = 0; i < this.length; i++) {
        if (this[i] === numToRemove) {
            this.splice(i, 1);
            i--;
};
arr.remove(1);
console.log(arr);

function run() {
    var arr = [1, 2, 1, 4, 1, 3, 4, 1, 111, 3, 2, 1, "1"];
    jsConsole.writeLine("The initial array: " + arr);
    arr.remove(1); 
    jsConsole.writeLine("The array with the number 1 removed: " + arr);
Array.prototype.remove = function (number) {
    for (var i = 0; i < this.length; i++) {
        if (number === this[i]) {
...

var example = [1, 4, 5, 3, 6, 4, 7, 3, 2];
Array.prototype.remove = function(number){
    var editedArray = [],
        index;
    for (index = 0; index < this.length; index += 1) {
        if (this[index] != number) {
            editedArray.push(this[index]);
    return editedArray;
};
console.log(example);
console.log(example.remove(4));

Array.prototype.remove = function(numberToRemove) {
    var index,
        len = this.length;
    for (index = 0; index < len; index += 1) {
        if (this[index] === numberToRemove) {
            this.splice(index, 1);
            index -= 1;
};
var arr = [1, 2, 5, 54, 32, 1, 4, 4, 1, 1, 1, 54, 3, 65, 4];
arr.remove(1);
console.log(arr);

Array.prototype.removeItem = (function (item){
    var newArray = [];
    for (var index in this) {
        if(this[index] !== item && typeof this[index] !== "function") {
            newArray.push(this[index]);
    return newArray;
});
...