Nodejs Array Remove remove(elementValue)

Method Source Code

// Problem 2. Remove elements
////from w ww  .ja va2 s.co m
// Write a function that removes all elements with a given value.
// Attach it to the array type.
// Read about prototype and how to attach methods.


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

Array.prototype.toString = function () {
    var result = '[' + this.join(', ') + ']' + ' -> type of elements: [';
    for (var i = 0; i < this.length; i++) {
        if (i === this.length-1) {
            result += typeof (this[i]) + ']';
        }
        else {
            result += typeof (this[i]) + ', ';
        }
    }
    return result;
}

var arr = [1, 2, 1, 4, 1, 3, 4, 1, 111, 3, 2, 1, '1'];

console.log('Original array: \n' + arr.toString());
arr.remove(1);
console.log('\nAfter removing elements with value 1:\n' + arr.toString());

Related

1. remove(element)

   Array.prototype.remove = function(element){
     var i = 0;
     var len = this.length;
     for(i = len - 1; i >= 0; i--){
       if(this[i] === element){
         this.splice(i,1);
   

2. remove(element)

   Array.prototype.remove = function (element) { 
       var myArray = new Array;
       this.forEach(function(item) {
          if(item !== element)
              myArray.push(item);
       });
       this.splice(0);
       for(var i = 0; i < myArray.length; i++)
           this.push(myArray[i]);
   ...
   

3. remove(element)

   var arrayElements = [1, 2, 1, 4, 1, 3, 4, 1, 111, 3, 2, 1, '1'];
   Array.prototype.remove = function (element) {
       var elements = [];
       for (var i = 0; i < this.length; i++) {
           if (this[i] !== element) {
               elements.push(this[i]);
       return elements;
   ...
   

4. remove(element, howMany)

   Array.prototype.remove = function(element, howMany) {
     var idx
     if (-1 !== (idx = this.indexOf(element))) {
       this.splice(idx, howMany || 1)
   

5. remove(elementVal)

   Array.prototype.remove = function(elementVal){
       var len = this.length;
      for(var i =0;i<len;i+=1)
           if(this[i]===elementVal)
               this.splice(i,1);
               i-=1;
   var arr = [1,1,1,2,2,2,2,1,1,1,1,1,1];
   arr.remove(1);
   console.log(arr);
   

6. remove(f)

   Array.prototype.remove  = function(f){
     var ME=this;
     if(typeof(f)=="function"){
       ME.each(function(s,i){
         if(f(s,i))ME.splice(i,1);
       },-1);
     return ME;
   };
   ...
   

7. remove(filter)

   Array.prototype.remove = function(filter)
     return this.select(function(row){
       return !filter(row);
     });
   

8. remove(fn, v)

   Array.prototype.remove = function(fn, v) { 
       var self = this;
       var isFN = typeof(fn) === 'function';
       var isV = v !== undefined;
       var arr = [];
       for (var i = 0, l = self.length; i < l; i++) {
           if (isFN) {
               if (!fn.call(self, self[i], i)) {
                   arr.push(self[i]);
   ...
   

9. remByVal(val)

   Array.prototype.remByVal = function (val) {
       for (var i = 0; i < this.length; i++) {
           if (this[i] === val) {
               this.splice(i, 1);
               i--;
       return this;
   };
   ...