Nodejs Array Remove by Value removeByValue(value)

Method Source Code

/*/*from w  w  w.j a va 2s  . co  m*/
 *  2.   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.removeByValue = function (value) {
    var i = 0,
        count = 0;

    for (i = 0; i < this.length; i += 1) {
        if (this[i] === value) {
            this.splice(i, 1);
            i -= 1;
            count += 1;
        }
    }

    return count;
};

var fruits = ["Apple", "Banana", "Orange", "Apple", "Mango", "Apple"];
var arr = [1, 3, 1, 1, 4, 5, 8, 1];
var value;
var removedElelemnts = 0;

jsConsole.writeLine('array: [' + arr + ']');
value = 1;
jsConsole.writeLine('remove elements with value: ' + value);
removedElelemnts = arr.removeByValue(value);

jsConsole.writeLine('number of removed elements: ' + removedElelemnts);
jsConsole.writeLine('array: [' + arr + ']');

// test with remove from fruits array
jsConsole.writeLine('');
jsConsole.writeLine('fruits array: [' + fruits + ']');
value = 'Apple';
jsConsole.writeLine('remove elements with value: ' + value);
removedElelemnts = fruits.removeByValue(value);

jsConsole.writeLine('number of removed elements: ' + removedElelemnts);
jsConsole.writeLine('fruits array: [' + fruits + ']');

Related

1. removeByValue( val )

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

2. removeByValue(index,val)

   Array.prototype.removeByValue = function(index,val) {
       for(var i=0; i<this.length; i++) {
           if(this[i][index] == val) {
               this.splice(i, 1);
               break;
   var arr = [{first:'zhang',last:'san'},{first:'li',last:'si'}];
   ...
   

3. removeByValue(val)

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

4. removeByValue(value)

   Array.prototype.removeByValue = function(value) {
       for (var i = 0; i < this.length; ++i) {
           if (this[i] == value) {
               this.splice(i, 1);
   

5. removeElement(value)

   Array.prototype.removeElement = function(value){
     if(this.indexOf(value) != -1) {
       this.splice(this.indexOf(value), 1)  
   

6. removeElement(valueElement)

   Array.prototype.removeElement = function(valueElement){
       for(var i = this.length - 1; i >= 0; i-=1) {
           if(this[i] === valueElement) {
               this.splice(i, 1);
   };
   var arr=[1,1,1,1,1,3,5,6,7,8,9];
   arr.removeElement(1);
   ...
   

7. removeElement(element)

   Array.prototype.removeElement = function(element) {
     var idx = this.indexOf(element);
     if (idx <= (-1)) {
       return;
     return this.remove(idx);
   };
   

8. removeElementremoveElement(element)

   var arr = [1,2,1,4,1,3,4,1,111,3,2,1,'1'];
   Array.prototype.removeElement = function removeElement(element){
       for (var i = 0; i < arr.length; i+=1) {
           if(arr[i]===element){
               arr.splice(i,1)
       return arr;
   };
   ...