Javascript regular expression needed

Here is开发者_高级运维 the format of the css I'm trying to edit using jquery.

/*8d*/ .class{color:#444444;}
/*5d*/ .class{background-color:#444444;}
/*3f*/ .class{color:#444444;}
/*9d*/ .class{color:#444444;}

I want to replace several entire lines within using Regular Expressions. For example, How do I select line 5d the replace with "/*5d*/ .new{border:#676767;}" so the end result is;

/*8d*/ .class{color:#444444;}
/*5d*/ .new{border:#676767;}
/*3f*/ .class{color:#444444;}
/*9d*/ .class{color:#444444;}

Thanks.

If you want to replace the 5d line, search for:

\/\*(5d)\*\/.*

and replace the match with

/*\1*/ .new{border:#676767;}

Note that \1 is a backreference to 5d.

could you use toggleClass or addClass / removeClass?

css.replace(/\/\*5d\*\/.*/, '/*5d*/.new{border:#676767;}');

Of course if you have your css in that format, with one rule on one line. If you have it on multiple line you'll have to use this:

css.replace(/\/\*5d\*\/{.*?}/s, '/*5d*/.new{border:#676767;}');

But if you have comments inside you rule things get more complicated and I don't think regex is enough.