javascript - Creating a nested object from parsed bb code -

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i trying create object in javascript given string includes bbcode. 

var bbstr = 'text [url=http://somelink]links , [i]nested bb code[/i][/url].';

i need recursively iterate through object , transform above string this:

var result = {   children : [     {       text : 'text ',       type : 'text'     },     {       children: [         {           text : 'links , ',           type : 'text'         },         {           text : 'nested bb code',           type : 'italic'         }       ],       text : null,       type : 'url',       url  : 'http://somelink'     },     {       text : '.',       type : 'text'     }   ],   type : null,   text : null };

then send object rendering function recursively create canvas text it. can't head around, how form object.

try simple stack-based parser:

token = /(?:\[(\w+)(.*?)\])|(?:\[\/(\w+)\])|([^\[\]]+)/g root = {children:[]} stack = [root]  bbstr.replace(token, function() {     var = arguments;      if(a[1]) {         var node = {tag: a[1], attr: a[2], children:[]}         stack[0].children.push(node);         stack.unshift(node);     } else if(a[3]) {         if(stack[0].tag != a[3])             throw "unmatched tag";         stack.shift();     } else if(a[4]) {         stack[0].children.push({tag: "#text", value: a[4]});     } })

the output format differs you've posted, should no problem.

http://jsfiddle.net/l8uzf/


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