Nodejs Array Insert insert(element)

Method Source Code

Array.prototype.insert = function(element) {
  if (this.indexOf(element) === -1) {
    this.push(element);//from w  w  w. j  a v a 2  s .  com
  }
  return this;
};

Related

1. insert( i, v )

   Array.prototype.insert = function( i, v ) {
     if (this.length == 0)
       return [v];
     if( i>=0 ) {
       var a = this.slice(), b = a.splice( i );
       a[i] = v;
       return a.concat( b );
   };
   ...
   

2. insert(elem, pos)

   Array.prototype.insert = function(elem, pos) {
       this.splice(pos, 0, elem);
   

3. insert(i, ob)

   Array.prototype.insert = function(i, ob) {
       i = i - 1;
       if (i < 0)i = 0;
       if (i > this.length)i = this.length;
       var st = (i == 0) ? [] : this.slice(0, i);
       st.push(ob);
       var ed = (i >= this.length) ? [] : this.slice(i);
       return st.concat(ed);
   };
   ...
   

4. insert(idx, item)

   Array.prototype.insert = function(idx, item) {
     this.splice(idx, 0, item);
   };
   

5. insert(index , item)

   Array.prototype.insert = function(index , item){
       this.splice(index, 0, item);
   };
   

6. insert(index)

   Array.prototype.insert = function(index) {
       this.splice.apply(this, [index, 0].concat(
           Array.prototype.slice.call(arguments, 1)));
       return this;
   };