HTML and CSS

restore default (built-in) function after overriding

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Join Date: Mar 2007

Posts: 5

Reputation: sultanwadood is an unknown quantity at this point

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sultanwadood sultanwadood is offline

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restore default (built-in) function after overriding

Mar 26th, 2007

Hi all.
I need to know how to restore or roll back to built-in function after overriding like following example.
String.prototype.substr= function()
{ return "";}
Now I want to use the one already built-in.
I shall be very thankful if some one could help me.
Sultan Wadood

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Join Date: Mar 2007

Posts: 5

Reputation: sultanwadood is an unknown quantity at this point

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sultanwadood sultanwadood is offline

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call built-in from overridden function of Object in javascript

Mar 26th, 2007

Hi All.
Do any body know how to call built in function of object like substr from overridden version. I am trying following example but the function called itself recursively not the function being overridden.
String.prototype.substr= function(str)
{

return str.substr(0,5);
}

I shall be very thankful if some one could give me some hints.
Sultan Wadood.

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Join Date: Sep 2005

Posts: 1,050

Reputation: digital-ether is just really nice

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digital-ether digital-ether is offline

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Re: restore default (built-in) function after overriding

Mar 27th, 2007

I don't think its possible to revert to the old function unless you save it somewhere.

eg:

Help with Code Tags

HTML and CSS Syntax (Toggle Plain Text)

String.prototype._substr = String.prototype.substr;
 
String.prototype.substr= function()
{
 
return this._substr(0,5);
}

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