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help on JScript built-in function please

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Posted by

Nozshand (5 posts) Bio

Date

Fri 26 Dec 2014 10:08 AM (UTC)

Amended on Fri 26 Dec 2014 10:09 AM (UTC) by Nozshand

Message

Hi

I have noticed that some of the JScript functions listed on MSDN website is not supported in mushclient.

for example Array.indexOf

var a = ['red', 'blue', 'green', 'blue'];
var myFirstIndex = Array.indexOf(a, "blue");

always return "Object doesn't support this property or method" error;

for...in loop also behaves weird, it does not return proper value from the array.

Just wondering if there is anyway to make those work in mushclient?

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Posted by Fiendish USA (2,551 posts) Bio Global Moderator

Date

Reply #1 on Fri 26 Dec 2014 04:26 PM (UTC)

Amended on Fri 26 Dec 2014 04:28 PM (UTC) by Fiendish

Message

From http://www.tutorialspoint.com/javascript/array_indexof.htm

Quote:

This method is a JavaScript extension to the ECMA-262 standard; as such it may not be present in other implementations of the standard. To make it work you need to add following code at the top of your script:


if (!Array.prototype.indexOf)
{
  Array.prototype.indexOf = function(elt /*, from*/)
  {
    var len = this.length;

    var from = Number(arguments[1]) || 0;
    from = (from < 0)
         ? Math.ceil(from)
         : Math.floor(from);
    if (from < 0)
      from += len;

    for (; from < len; from++)
    {
      if (from in this &&
          this[from] === elt)
        return from;
    }
    return -1;
  };
}

JScript is one of those "other implementations".

https://github.com/fiendish/aardwolfclientpackage

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