Nodejs Array Push If Not Exist pushIfNotExist(element, comparer)

Method Source Code

// adds an element to the array if it does not already exist using a comparer 
// function//from www.j  a v a 2s.c om
Array.prototype.pushIfNotExist = function(element, comparer) { 
    if (!this.inArray(comparer)) {
        this.push(element); 
        return true;
    }
    return false;
}; 


// find index of object in array given some property value
function arrayObjectIndexOf(myArray, property, searchTerm) {
    for(var i = 0, len = myArray.length; i < len; i++) {
        if (myArray[i][property] === searchTerm) return i;
    }
    return -1;
}

// find index of item in array
function arrayIndexOf(myArray, searchTerm) {
    for(var i = 0, len = myArray.length; i < len; i++) {
        if (myArray[i] === searchTerm) return i;
    }
    return -1;
}

Related

1. pushIfNotExist(element, comparer)

   Array.prototype.pushIfNotExist = function(element, comparer) { 
       if (!this.inArray(comparer)) {
           this.push(element);
   };
   

2. pushIfNotExist(element, comparer)

   Array.prototype.pushIfNotExist = function(element, comparer) { 
       if (!this.inArray(comparer)) {
           this.push(element);
   };
   

3. pushIfNotExist(element, comparer)

   Array.prototype.pushIfNotExist = function(element, comparer) { 
       if (!this.inArray(comparer)) {
           this.push(element);
   }; 
   function arrayObjectIndexOf(myArray, property, searchTerm) {
       for(var i = 0, len = myArray.length; i < len; i++) {
           if (myArray[i][property] === searchTerm) return i;
       return -1;
   

4. pushIfNotExist(item)

   Array.prototype.pushIfNotExist = function (item) {
       if (item == null)
           return;
       var exist = false;
       for (var i = 0; i < this.length; i++) {
           if (this[i] == item) {
               exist = true;
               break;
       if (!exist)
           this.push(item);
   };
   

5. pushIfNotExist(item)

   Array.prototype.pushIfNotExist = function(item) {
     if (!this.inArray(item)) {
       this.push(item);
   };
   

6. pushIfNotPresent(pValue)

   Array.prototype.pushIfNotPresent = function (pValue){
       var lArray = this || [];
       if (lArray.indexOf(pValue) == -1){
           lArray.push(pValue);
           return true;
       return false;