Nodejs Array Insert insert(i, ob)

Method Source Code

Array.prototype.insert = function(i, ob) {
    i = i - 1;/*from w w w .  j  a  v a2 s .  c o  m*/
    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);
};

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(element)

   Array.prototype.insert = function(element) {
     if (this.indexOf(element) === -1) {
       this.push(element);
     return this;
   };
   

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;
   };
   

7. insert(index)

   Array.prototype.insert = function(index) {
       function isArray(instance) {
           return Object.prototype.toString.call(instance) !== '[object Array]';
       if (!isArray(this)) {
           throw new TypeError("`this` must be Array, not " + typeof this);
       if (typeof index !== 'number') {
           throw new TypeError("arguments[0] must be number (index to insert at), not " + typeof arguments[0]);
   ...