Nodejs Array Insert insert(index, item)

Method Source Code

Array.prototype.insert = function (index, item) {
  if (index)/*from w  w w  .j a va  2  s .  com*/
    this.splice(index, 0, item);
  else
    this.push(item);
};

Related

1. 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);
   };
   ...
   

2. insert(idx, item)

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

3. insert(index , item)

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

4. insert(index)

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

5. 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]);
   ...
   

6. insert(index, item)

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

7. insert(index, item)

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

8. insert(index, item)

   Array.prototype.insert = function(index, item) {
     this.splice(index, 0, item);
     return this;
   if (Function.prototype.name === undefined){
     Object.defineProperty(Function.prototype,'name',{
       get: function(){
         return /function ([^(]*)/.exec( this+"" )[1];
     });
   

9. insert(index, item)

   Array.prototype.insert = function(index, item) {
     var args = this.slice.call(arguments),
         index = args.shift();
     args = [index,0].concat(args);
     this.splice.apply(this, args);
     return this;
   var result = [1,2,3,4,7,8,9,10].insert(4,5,6);
   console.log(result);
   ...