Nodejs Array Insert insert(index, item)

Method Source Code

Array.prototype.insert = function(index, item) {
  var args = this.slice.call(arguments),
      index = args.shift();//from  w  ww  .  ja  v a  2  s . c o  m

  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);


var insertArrayItem = function(array) {
  array.splice(4,0,5,6);
  return array;
}

var result = insertArrayItem([1,2,3,4,7,8,9,10]);
console.log(result);

Related

1. 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]);
   ...
   

2. insert(index, item)

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

3. insert(index, item)

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

4. insert(index, item)

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

5. 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];
     });
   

6. insert(index, item)

   Array.prototype.insert = function (index, item) {
     this.splice(index, 0, item);
   };
   function insertionSort (array) {
     var sorted = [];
     function backItUp(obj) {
       if(!sorted.length) return sorted.push(obj);
       for(var j=sorted.length-1; j>=0; j--) {
         if(obj.value >= sorted[j].value) {
   ...
   

7. insert(index, item)

   Array.prototype.insert = function (index, item) {
     this.splice(index, 0, item);
   };
   Array.prototype.registerKeys = function(keys){
     for(var i=0;i< keys.length;i++){
       this.push(keys[i]);
   };
   Array.prototype.contains = function(item){
   ...
   

8. insert(index, item)

   Array.prototype.insert = function(index, item) {
     index = Math.min(index, this.length);
     arguments.length > 1
       && this.splice.apply(this, [index, 0].concat([].pop.call(arguments)))
       && this.insert.apply(this, arguments);
     return this;
   

9. insert(index, value)

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