4. Add an element to the end of the array item, without modifying the original array, returning the new array.

Source: Internet
Author: User

Method One: Concat (), connect two arrays, return a new array

    var a=[1,5, ' ff ', ' g ', ' h ', ' SD ', ' G '];    Alert (Add (A,' G '));              function   Add (arr,item) {        return  arr.concat (item);  
}

Method Two: Slice () plus push ()

    function   Add (arr,item) {        var newarr=arr.slice (0);              Newarr.push (item);                return newarr;    }

Method Three: Splice () method;

    function   Add (arr,item) {        var newarr=arr.slice (0);       Newarr.splice (newarr.length  -1,0, item);          return newarr;    }

4. Add an element to the end of the array item, without modifying the original array, returning the new array.

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