Question

I have some simple code you can see in my fiddle. It alerts properly in all browsers and IE9, but not IE8 or 7.

var func = function( x ) {
    var slice = [].slice,
        args = slice.call( arguments ),
        pass = args.splice(1);

    alert( pass );

};

func( 'a', 1, 2 );

EDIT
Using the solution I posted what I used here:
http://jsfiddle.net/7kXxX/4/

I am using this in a case where I don’t know how many arguments are coming, which is why I’m using “arguments”

Answer 1

The ECMAScript 3rd edition standard requires the second deleteCount argument:

Array.prototype.splice(start, deleteCount [, item1 [, item2[,...]]])

MSDN docs show that IE follows this standard:

arrayObj.splice(start, deleteCount, [item1[, item2[, . . . [,itemN]]]])

Firefox’s SpiderMonkey allows the second argument to be optional (as do other modern browsers):

array.splice(index , howMany[, element1[, ...[, elementN]]])
array.splice(index[, howMany[, element1[, ...[, elementN]]]])

Description:

howMany
An integer indicating the number of old array elements to remove. If howMany is 0, no elements are removed. In this case, you
should specify at least one new element. If no howMany parameter is
specified (second syntax above, which is a SpiderMonkey extension),
all elements after index are removed.

Sources:

• http://bclary.com/2004/11/07/#a-15.4.4.12
• http://msdn.microsoft.com/en-us/library/wctc5k7s%28v=VS.85%29.aspx
• https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/splice