i'm trying to make my own markdown-able textarea like Stackoverflow has done. The goal is to allow people to type **blah blah**
in a textarea and have the output in a div be <span style="font-weight:bold;">blah blah</span>
.
I'm having trouble with the javascript to find and replace to the **asterisks with the HTML.
here's a jsfiddle which has gotten the party started: http://jsfiddle.net/trpeters1/2LAL4/14/
here's the JS on that just to show you where I'm at:
$(document.body).on('click', 'button', function() {
var val=$('textarea').val();
var bolded=val.replace(/\**[A-z][0-9]**/gi, '<span style="font-weight:bold;">"'+val+'" </span>');
$('div').html(bolded);
});
and the HTML...
<textarea></textarea>
<div></div><button type="button">Markdownify</button>
any thoughts would be greatly appreciated!
thanks, tim
Why create from scratch? With so many open source editors out there, you should pick a code base you like & go from there. http://oscargodson.github.com/EpicEditor/ http://markitup.jaysalvat.com/home/
The following regular expression will find your asterisk-wrapped text:
/\x2a\x2a[A-z0-9]+\x2a\x2a/
I updated your fiddle as an example: http://jsfiddle.net/2LAL4/30/
If you are using jQuery, replace this:
with this:
Your regex is broken, for one thing. You probably want something more like:
The
*
is a special character in regular expressions. If you want to match against a literal*
, then you need to escape it with\
.For instance: http://jsfiddle.net/2LAL4/22/
However, even with this change there's still a fair ways to go before you get to where you really want to be. For instance, your example will not work if the text area contains a mix of bold and non-bold text.
The other answers fail when a char is immediately before or after the asterisks.
This works like markdown should:
See JSFiddle
None of the provided answers works in all cases. For example, the other solutions wont work if we have a space next to the double star, ie:
So I wrote this:
Just call it like this:
and it will work in all cases. Of course, you can also use it with other identifiers/html-tags as you like (the stackoverflow preview should have this too).