Nodejs Array In isIn(key, value)

Method Source Code

Array.prototype.isIn = function(key, value) {
    for(var i =0; i<this.length; i++) {
        if(this[i][key] == value) {
            return true;
        }/*from w ww  .ja v  a  2  s.  c  o  m*/
    }
    return false;
};

Related

1. in_array(entity)

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

2. 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;
   

3. in_array(value)

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

4. in_array(value)

   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;
   

5. 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;
   ...
   

6. isInArray(elem)

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