Nodejs Array Index indexOf(obj)

Method Source Code

/*/*from  w ww  .j  a  v a 2  s.  c om*/
return index of element in the array
*/
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;
}

Related

1. indexOf(obj)

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

2. indexOf(obj)

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

3. indexOf(obj)

   Array.prototype.indexOf = function (obj) {
       for (i = 0; i < this.length; i++) {
     if (obj === this[i]) {
         return i
       return -1;
   };
   

4. 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;
   };
   ...
   

5. 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) {
   ...
   

6. 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;
   

7. indexOf(obj)

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

8. indexOf(obj, fromIndex)

   if (!Array.prototype.indexOf) {
       Array.prototype.indexOf = function (obj, fromIndex) {
           if (fromIndex == null) {
               fromIndex = 0;
           } else if (fromIndex < 0) {
               fromIndex = Math.max(0, this.length + fromIndex);
           for (var i = fromIndex, j = this.length; i < j; i++) {
               if (this[i] === obj) return i;
   ...
   

9. indexOf(obj, fromIndex)

   Array.prototype.indexOf = function (obj, fromIndex) {
       for (var i = (fromIndex || 0); i < this.length; i++) {
           if (this[i] === obj) {
               return i;
       return -1;
   };