Passing regexp saved value as array index

Question

I need to replace [link]0[/link] with <a href=...

Now, the links are saved in an array links and the number inside [link][/link] is the pointer to links index.

I am trying to do next:

txt.replace( /\[link\](\d+)\[\/link\]/ , "<a href='" + links[ THE_INDEX ][ 0 ] + "' target='_blank'>" + ( links[ THE_INDEX ][ 1 ] || links[ THE_INDEX ][ 0 ] ) + "</a>" );

but I don't know, how to pass the saved value. Could you help me solve it?

P.S. I know I could make loop and use the exec() to save value and pass it, but I want to know, is it possible to do it like I sayd above.

For a more simple example of expectation

my_array = [ "data1", "data2", "data3" ];

"xxx1xxx".replace( /xxx(\d+)xxx/, "my_data=" + my_array[ THE_MATCH ] ); // should be "my_data=data1"
"xxx3xxx".replace( /xxx(\d+)xxx/, "my_data=" + my_array[ THE_MATCH ] ); // should be "my_data=data3"

Where THE_MATCH is taken from the regex match.

just edited your question to try to remove noise from the example. If you don't like don't hesitate to turn it back. — fguillen
– fguillen, Commented May 14, 2012 at 14:11

Michael Sazonov · Accepted Answer · 2012-05-14 14:21:42Z

1

Found the solution:

function replacer(str, p1, p2 ){
    return "<a href='" + links[ p1 ] + "'></a>"
}
var newString = "XXzzzz".replace(/(X*)(z*)/, replacer)

While the values passed to replacer() as p1, p2 are the matched values. The amount of p arguments in replacer() needs to be as the amount of matched values.

answered May 14, 2012 at 14:21

Michael Sazonov

1,53311 silver badges21 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

fguillen Over a year ago

Yes.. I was just to say the same: stackoverflow.com/questions/7192436/… (duplicated? :))

Collectives™ on Stack Overflow

Passing regexp saved value as array index

For a more simple example of expectation

1 Answer 1

1 Comment

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

For a more simple example of expectation

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Linked

Related