# "new Number(1.23)" vs. "Number(1.23)" vs. "1.23"

**URL:** <https://forum.kirupa.com/t/new-number-1-23-vs-number-1-23-vs-1-23/301481>\
**Category:** flash\
**Created:** [December 9, 2009, 9:16pm UTC](https://forum.kirupa.com/t/new-number-1-23-vs-number-1-23-vs-1-23/301481 "2009-12-09T21:16:30Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![ell022](https://avatars.discourse-cdn.com/v4/letter/e/bc8723/32.png) [@ell022](https://forum.kirupa.com/u/ell022)\
**Post date:** [December 9, 2009, 9:16pm UTC](https://forum.kirupa.com/t/new-number-1-23-vs-number-1-23-vs-1-23/301481/1 "2009-12-09T21:16:30Z")

</div>

```auto

var a:Number = new Number(1.23);
var b:Number = Number(1.23);
var c:Number = 1.23;

var d:String = new String("abc");
var e:String = String("abc");
var f:String = "abc"

var g:Array = new Array("a", "b", "c");
// var h:Array = Array("a", "b", "c"); creates compiler error - 1137: Incorrect number of arguments. Expected no more than 1.
var h:Array = Array(3);
h[0] = "a";
h[1] = "b";
h[2] = "c";
var i:Array = ["a", "b", "c"];

trace(a); // returns: 1.23
trace(b); // returns: 1.23
trace(c); // returns: 1.23
trace(d); // returns: abc
trace(e); // returns: abc
trace(f); // returns: abc
trace(g); // returns: a,b,c
trace(h); // returns: a,b,c
trace(i); // returns: a,b,c

```

Can someone explain the differences between these constructor methods?  
When should “new” be used?