javascript Push & Add Elements
Array push() method adds element to the array end. It returns the array length.
var arr = new Array(1,2,3,4,5);
alert(arr.toString()); //1,2,3,4,5
arr.push(13); //add 13 to the end of array
alert(arr.toString()); //1,2,3,4,5,13
arr.push(20,30,40); //add 20, 30, 40 to the end of array
alert(arr.toString()); //1,2,3,4,5,13,20,30,40
If you want to add an element to the array start position, use
unshift() method.
var arr = new Array(1,2,3,4,5);
alert(arr.toString()); //1,2,3,4,5
arr.unshift(13); //add 13 to the start position of array
alert(arr.toString()); //13,1,2,3,4,5
If you want to add elements to the specified position, you can use
splice(i,0,...) method. It add elements to the array, and return new array.
"i" - array position, "..." - elements to be added.
var arr = [4,2,8,5,3,3,100,500];
var arr2 = arr.splice(3,0,11,12); //arr2 is [4,2,8,11,12,5,3,3,100,500]
You may also define an insert method which can add an element to a specific position.
Array.prototype.insert = function (i,elem)
{
this.splice(i,0,elem);
}
var arr = [4,2,8,5,3,3,100,500];
arr.insert(3,11); //arr is [4,2,8,11,5,3,3,100,500]
