[Tips] Regular Expressions are good.

As required by the project, you need to format the value of textarea from the foreground and save it to the database. The specific requirement is to replace the URL with "http: // *****" or "http, note that "" should be included before, so it is natural to think of replace, also think of the regular expression, how to obtain the value that can be matched, and then find that you can directly use $1... get in the form of $9, haha, one lineCodeSolve the problem.

Htmltext = htmltext. replace (/(["]) ([http: // | file: //] [^"] *) (["])/g, "<a href = $2 target = '_ blank'>/" $2/"</a> ");