Nodejs Array Index indexOf(obj)

Here you can find the source of indexOf(obj)

Method Source Code

Array.prototype.indexOf = function (obj) {
    for (i = 0; i < this.length; i++) {
   if (obj === this[i]) {
       return i/*ww w  .  j  av  a  2 s  .  com*/
   }
    }
    return -1;
};

Related

  1. indexOf(item,from)
    if(!Array.indexOf) {
    Array.prototype.indexOf = function(item,from)
      if(!from)
        from = 0;
      for(var i=from; i<this.length; i++) {
        if(this[i] === item)
          return i;
      return -1;
    };}
    
  2. indexOf(needle)
    Array.prototype.indexOf = Array.indexOf || function(needle) {
      for(var i = 0; i < this.length; i++) {
        if(this[i] == needle) {
          return i;
      return -1;
    };
    
  3. indexOf(o)
    Array.prototype.indexOf = function(o){
      for(var i = 0, len = this.length; i < len; i++){
        if(this[i] === o){
          return i;
    };
    
  4. indexOf(obj)
    Array.prototype.indexOf = function(obj) {
      for (var i = 0; i < this.length; i++) {
        if (this[i] == obj)
          return i;
      return -1;
    };
    
  5. indexOf(obj)
    Array.prototype.indexOf = function (obj) {
        for (var i = 0; i < this.length; i++) {
            if (this[i] == obj) {
                return i;
        return -1;
    };
    
  6. indexOf(obj)
    Array.prototype.indexOf = function(obj){
      var l = this.length;
      for(var i=0; i<l; i++){
        if(this[i] == obj){
          return i;
      return -1;
    };
    ...
    
  7. indexOf(obj)
    var os = require('os');
    Array.prototype.indexOf = function(obj) {
      for (var i = 0; i < this.length; i++) {
        if (this[i] == obj)
          return i;
      return -1;
    Array.prototype.has = function(obj) {
    ...
    
  8. indexOf(obj)
    Array.prototype.indexOf=function(obj){
      var result=-1;
      for (var i=0;i<this.length;i++){
        if (this[i]==obj){
          result=i;
          break;
      return result;
    ...
    
  9. indexOf(obj)
    if(!Array.indexOf){ 
      Array.prototype.indexOf = function(obj){
        for(var i=0; i<this.length; i++){
          if(this[i]==obj){
            return i;
        return -1;