Microsoft® JScript™ substr Method | Language Reference Version 3

See Also Applies To

##### Description

> Returns a substring beginning at a specified location and having a specified length.

##### Syntax

> stringvar.substr(start [, length ])

> The substr method syntax has these parts:

> Part | Description
> stringvar | Required. A string literal or String object from which the substring is extracted.
> start | Required. The starting position of the desired substring. The index of the first character in the string is zero.
> length | Optional. The number of characters to include in the returned substring.

##### Remarks

> If length is zero or negative, an empty string is returned. If not specified, the substring continues to the end of stringvar.

> The following example illustrates the use of the substr method:

> >     function SubstrDemo()
> >     {
> >       var s, ss;
> >       var s = "The quick brown fox jumped over the lazy yellow dog.";
> >       ss = s.substr(16, 3);
> >       // Returns "fox"
> >       return(ss);
> >     }

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