Nodejs Array Filter filter(f)

Here you can find the source of filter(f)

Method Source Code

Array.prototype.filter = Array.prototype.filter || function (f) {
  var result = [];

  this.each(function (element) {
    if (f(element, result.length)) {
      result.push(element);//ww w . j a  va2s  . c om
    }
  });

  return result;
};

Related

  1. filter(callback, context)
    var array = [1,2,3,4,5,6,7,8,9,4,5,6,7,7,5,6]
    var arrNew = array.Reject(function (el)
      return el % this
    }, 2)
    console.log(arrNew)
    Array.prototype.filter = function (callback, context)
      var arr = []
    ...
    
  2. filter(callbackfn, thisArg)
    Array.prototype.filter = function (callbackfn, thisArg) {
      var xs = [];
      for (var i=0; i<this.length; i++)
        if (Kernel.Reflect.apply(callbackfn, thisArg, [this[i], i, this]))
          xs[xs.length] = this[i];
      return xs;
    
  3. filter(cb)
    Array.prototype.filter = function(cb){
        var arr = Object(this);
        var res = [];
        for(var i=0;i<arr.length;i++){
            if(cb(arr[i])){
                res.push(arr[i]);
        return res;
    ...
    
  4. filter(f)
    var arr = ['hello', 42, true, function() {}, "123", 3.14, 0, [1], {}];
    var isInteger = function(x) {
        return (typeof x === 'number' && isFinite(x) && Math.floor(x) === x);
    Array.prototype.filter = function(f) {
        var newArr = [];
        for (var i = 0; i < this.length; i++) {
            if (f(this[i])) newArr.push(this[i]);
        return newArr;
    };
    var newArr = arr.filter(isInteger);
    console.log(newArr);
    
  5. filter(f)
    var arr = ['hello', 42, true, function() {}, "123", 3.14, 0, [1], {}];
    var isInteger = function(x) {
        return typeof x === 'number' && !isNaN(x) && x % 1 === 0;
    };
    Array.prototype.filter = function(f) {
        var newArr = [];
        for (var i = 0; i < this.length; i++) {
            if ( f(this[i]) ) {
                newArr.push(this[i]);
    ...
    
  6. filter(f)
    Array.prototype.filter = function(f) {
      var filtered = [];
        for(var i = 0; i < this.length; i++)
          f(this[i], i) && filtered.push(this[i]);
        return filtered;
    };
    
  7. filter(f)
    Array.prototype.filter = function(f) {
      var filter = [];
      for (var i = 0; i < this.length; i++) {
        if (f(this[i]))
          filter.push(this[i]);
      return filter;
    };
    
  8. filter(filterFunc)
    Array.prototype.filter = function(filterFunc) {
      var ret = [];
      for(var i = 0; i < this.length; i++) {
        if(filterFunc(this[i])) {
          ret.push(this[i]);
      return ret;
    };
    ...
    
  9. filter(fn)
    Array.prototype.filter = function(fn){
        var self = this;
        var arr = [];
        for(var i=0; i<self.length; i++){
            if (fn(self[i])){
                arr.push(self[i]);
        return arr;
    ...