[Javascript] Trim whitespaces using Replace function

[Christopher J. Baldoza]

Hi Cutter,

Thanks ... :)


Thope

On Mon, 09 Jul 2001, you wrote:
> Regular expressions always begin and end with a slash,/. The carrot,^, is 
> the beginning of a string. any character you want your expression to match 
> will be enclosed in brackets, []. the \s is denote a white space character. 
> The plus sign + means one or more of whatever the previous item was that 
> we're checking on. In this case, the white space. Then you have the ending 
> regular expression slash, /. the g is a regular expression modifier to 
> search for all possible matches (globally), not just the first one. Within 
> the quotation marks are your replace items, in this case it would replace 
> white space with no space. In the second version of the script they also are 
> using the dollar sign, $, which signifies that the matched string must end 
> here. I'm not positive, but this might not be necessary for trimming off 
> white space. You might have to ask one of the local gurus on that one.
> 
> I pulled this information from "Javascript for the World Wide Web: Fourth 
> Edition", Chapter 7. This comes from PeachPit Press. I like the book, as it 
> gives a lot of practical example info, explaining scripts step by step.
> 
> Cutter
> **********************************************
> Hi,
> 
>       I see the ff expression.
> 
>      STRING=STRING.replace(/^[\s]+/g,"");
>      STRING=STRING.replace(/[\s]+$/g,"");
> 
>       I know that these are expressions to trim the
> white spaces but I want to know what is the
> meaning of each characters inside the replace
> function.
> 
>       Thanks in Advance.
> 
> Thope
> 
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