Nodejs Array Include includes(matcher)

Method Source Code

Array.prototype.includes = function(matcher) {
  var includes = false
    , arr = this;//from   w ww.jav  a  2 s .co m

  for( var j = 0, str; str = arr[j++]; ) {
    if( typeof str === "string" && str.includes(matcher) ) {
      includes = true;
    }
  }

  return includes;
}

Related

1. include(value)

   Array.prototype.include = function(value){
     return this.indexOf(value) !== -1;
   

2. include(x)

   Array.prototype.include = function(x){
     return this.indexOf(x) > -1
   

3. includes(array)

   Array.prototype.includes = function(array) {
     for ( var i = 0; i < this.length; i++) {
       for ( var k = 0; k < array.length; k++) {
         if ( this[i] == array[k]) {
           return true;
     return false;
   ...
   

4. includes(element)

   Array.prototype.includes = function(element) {
     return this.indexOf(element) !== -1;
   };
   

5. includes(item)

   Array.prototype.includes = function(item) {
       return this.indexOf(item) > -1;
   

6. includes(s)

   Array.prototype.includes = function(s) {
       return this.indexOf(s) > -1;
   };
   

7. includes(searchElement /*, fromIndex*/ )

   Array.prototype.includes = Array.prototype.includes || (function(searchElement  ) {
     var O = Object(this);
     var len = parseInt(O.length, 10) || 0;
     if (len === 0) return false;
     var n = parseInt(arguments[1], 10) || 0;
     var k;
     if (n >= 0) {
       k = n;
     } else {
   ...
   

8. includes(searchElement /*, fromIndex*/ )

   if (![].includes) {
     Array.prototype.includes = function(searchElement  ) {
       if (this === undefined || this === null) {
         throw new TypeError('Cannot convert this value to object');
       var O = Object(this);
       var len = parseInt(O.length, 10) || 0;
       if (len === 0) {
         return false;
   ...
   

9. includes(searchElement /*, fromIndex*/)

   if (!Array.prototype.includes) {
     Array.prototype.includes = function(searchElement ) {
       'use strict';
       if (this == null) {
         throw new TypeError('Array.prototype.includes called on null or undefined');
       var O = Object(this);
       var len = parseInt(O.length, 10) || 0;
       if (len === 0) {
   ...