Nodejs Array In in_array(value)

Method Source Code

/**//  w  w w.ja  v a2 s  .  c  o m
 * Looks if a value can be found inside the array.
 * Returns the index of the item where the value was found.
 * @param value
 * @return integer|false
 */
Array.prototype.in_array = function(value){
    var len = this.length,
        i;
    for(i = 0;i < len;i+=1){
        if(this[i] === value) return i;
    }
    return false;
}

Related

1. in_array(e)

   Array.prototype.in_array = function (e) {
     var r = new RegExp(this.S + e + this.S);
     return (r.test(this.S + this.join(this.S) + this.S));
   

2. in_array(e)

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

3. in_array(entity)

   Array.prototype.in_array = function(entity) {
       for (var idx in this) {
           if (this[idx] === entity)
               return true;
       return false;
   };
   

4. in_array(needle)

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

5. in_array(value)

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

6. in_array(value, caseSensitive)

   Array.prototype.in_array = function(value, caseSensitive)
     for(var i=0; i < this.length; i++)
       if(caseSensitive)
         if(this[i].toLowerCase() == value.toLowerCase())
           return true;
   ...
   

7. isIn(key, value)

   Array.prototype.isIn = function(key, value) {
       for(var i =0; i<this.length; i++) {
           if(this[i][key] == value) {
               return true;
       return false;
   };
   

8. isInArray(elem)

   Array.prototype.isInArray = function (elem) {
       for (i = 0, len = this.length; i < len; i++) {
           if (this[i] == elem) {
               return true;
       return false;