JavaScript: Parse this string

Question

Here is a long string (actually a JSON key value):

"\u003cspan title=\"5 gold badges\"\u003e\u003cspan class=\"badge1\"\u003e●\u003c/span\u003e\u003cspan class=\"badgecount\"\u003e5\u003c/span\u003e\u003c/span\u003e\u003cspan title=\"8 silver badges\"\u003e\u003cspan class=\"badge2\"\u003e●\u003c/span\u003e\u003cspan class=\"badgecount\"\u003e8\u003c/span\u003e\u003c/span\u003e\u003cspan title=\"57 bronze badges\"\u003e\u003cspan class=\"badge3\"\u003e●\u003c/span\u003e\u003cspan class=\"badgecount\"\u003e57\u003c/span\u003e\u003c/span\u003e"

I need a way to parse it to get the number of gold, silver and bronze badges, using simple JScript in Dashcode.

It looks nothing like JSON to me. It appears to be an escaped HTML fragment. — Jim Blackler
– Jim Blackler, Commented Apr 7, 2011 at 14:30

Jonny Buchanan · Accepted Answer · 2011-04-07 16:19:20Z

0

function getBadgeCounts(s) {
  var badgeCountRE = /title="(\d+)/g, match = null, counts = [];
  while ((match = badgeCountRE.exec(s)) !== null) {
    counts.push(match[1]);
  }
  return {gold: counts[0], silver: counts[1], bronze: counts[2]};
}

Without hardcoded medal names:

function getBadgeCounts(s) {
  var badgeCountRE = /title="(\d+) (\w+)/g, match = null, counts = {};
  while ((match = badgeCountRE.exec(s)) !== null) {
    counts[match[2]] = match[1];
  }
  return counts;
}

edited Apr 7, 2011 at 16:19

answered Apr 7, 2011 at 14:47

Jonny Buchanan

62.9k17 gold badges147 silver badges150 bronze badges

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Comments

wong2 · Accepted Answer · 2011-04-07 14:40:38Z

0

This is what the string is:

   '<span title="5 gold badges">
        <span class="badge1">&#9679;</span>
        <span class="badgecount">5</span>
    </span>
    <span title="8 silver badges">
        <span class="badge2">&#9679;</span>
        <span class="badgecount">8</span>
   </span>
   <span title="57 bronze badges">
       <span class="badge3">&#9679;</span>
       <span class="badgecount">57</span>
   </span>'

Maybe you can add it to an unvisible div, so you can use DOM method to get the values you want

edited Apr 7, 2011 at 14:40

answered Apr 7, 2011 at 14:32

wong2

36.1k51 gold badges138 silver badges182 bronze badges

1 Comment

Jim Blackler Over a year ago

Seems he could load it into the DOM with innerHTML= then run a jQuery on it.

meouw · Accepted Answer · 2011-04-07 15:20:48Z

var str = "\u003cspan title=\"5 gold badges\"\u003e\u003cspan class=\"badge1\"\u003e●\u003c/span\u003e\u003cspan class=\"badgecount\"\u003e5\u003c/span\u003e\u003c/span\u003e\u003cspan title=\"8 silver badges\"\u003e\u003cspan class=\"badge2\"\u003e●\u003c/span\u003e\u003cspan class=\"badgecount\"\u003e8\u003c/span\u003e\u003c/span\u003e\u003cspan title=\"57 bronze badges\"\u003e\u003cspan class=\"badge3\"\u003e●\u003c/span\u003e\u003cspan class=\"badgecount\"\u003e57\u003c/span\u003e\u003c/span\u003e";

var res = {
    gold: 0,
    silver: 0,
    bronze: 0
};

/* using a RexExp
/                    - delimeter
(\d+)                - capturing one or more digits
\s+                  - one or more whitespace characters
(gold|silver|bronze) - capturing the color
/g                   - delimeter (global flag)

to match the information in the title of the spans
and using the replace trick to populate res
*/

str.replace( /(\d+)\s+(gold|silver|bronze)/g, function( all, count, color ) {
    res[color] += parseInt( count );
});

console.log( res ); // Object { gold=5, silver=8, bronze=57}

Dan Olson · Accepted Answer · 2011-05-04 23:18:10Z

0

If you put that string into a jQuery call, you can then query the document fragment just like you would any other piece of HTML:

var badgeHTML = "..." // Your encoded string here

var parsedHTML = $(badgeHTML); // Returns a jQuery collection of HTML nodes

edited May 4, 2011 at 23:18

Dan Olson

23.5k4 gold badges45 silver badges56 bronze badges

answered Apr 7, 2011 at 15:04

oif_vet

2042 silver badges7 bronze badges

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