Nodejs Array Contain contains(v)

Method Source Code

// contains() and unique() functions were found here
//http://stackoverflow.com/questions/11246758/how-to-get-unique-values-in-an-array

Array.prototype.contains = function(v) {
  for(var i = 0; i < this.length; i++) {
      if(this[i] === v) return true;
  }/*from  w w w  .ja  v  a2  s.  c  om*/
  return false;
};

Array.prototype.unique = function() {
  var arr = [];
  for(var i = 0; i < this.length; i++) {
      if(!arr.contains(this[i])) {
          arr.push(this[i]);
      }
  }
  return arr;
}


//https://coderwall.com/p/_g3x9q/how-to-check-if-javascript-object-is-empty
function isEmpty(obj) {
    for(var key in obj) {
        if(obj.hasOwnProperty(key))
            return false;
    }
    return true;
}



// function do add hyperlinks
function add_hyperlink(arg, arg2) {
  var out;
  if (arg == null) {
    out = "";
  }
  else {
    out = "<a href=" + arg + ">" + arg2 + "<a/>";
  }
  return out;
}

Related

1. contains(target)

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

2. contains(target, ordered)

   Array.prototype.contains = function (target, ordered) {
       ordered = ordered || false;
       var foundAll = true;
       if (ordered) {
           var lastIdx = -1;
           for (var i = 0; i <= target.length - 1; i++) {
               lastIdx = this.indexOf(target[i], lastIdx + 1);
               if (lastIdx == -1) {
                   foundAll = false;
   ...
   

3. contains(v)

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

4. contains(v)

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

5. contains(v)

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

6. contains(v)

   Array.prototype.contains = function(v) {
         for(var i = 0; i < this.length; i++) {
             if(this[i] === v) return true;
         return false;
     };
     Array.prototype.unique = function() {
       var arr = [];
       for(var i = 0; i < this.length; i++) {
   ...
   

7. contains(val)

   #!/usr/bin/js
   arr = [1, 2, 3, 4, 5];
   Array.prototype.contains = function (val) {
     for (var i = 0; i < this.length; i++){
       if (this[i] === val){
         return true;
   console.log(arr.contains(3))
   

8. contains(value)

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

9. contains(value)

   Array.prototype.contains = function (value){
       return this.indexOf(value)>=0
   };