Removes the first element from an array and returns it.
Syntax
arrayObj.shift( )
Parameters
The required arrayObj reference is an Array object.
Return Value
Returns the element removed from the array.
Remarks
The following example illustrates the use of the shift method.
var arr = new Array(10, 11, 12);
while (arr.length > 0)
{
var i = arr.shift();
document.write (i.toString() + " ");
}
// Output:
// 10 11 12
Requirements
Supported in the following document modes: Quirks, Internet Explorer 6 standards, Internet Explorer 7 standards, Internet Explorer 8 standards, Internet Explorer 9 standards, Internet Explorer 10 standards, Internet Explorer 11 standards. Also supported Store apps (Windows 8 and Windows Phone 8.1). See Version Information.

