Comparing two values evaluates to false instead of true

Question

Comparing two values evaluates to false instead of true

I'm using Node.js with Express.js and Redis. I'm recording the uptime of a site component by incrementing a redis key. I want to update the uptimerecord:tracker key once the current uptime > the current uptime record but somehow it's not updating it and evaluating uptimeTracker > uptimeRecordTracker with false even though it's true.

Is there anything I'm missing?

Thanks!

  db.get("uptime:tracker", function(err, uptimeTracker) {
      db.get("uptimerecord:tracker", function(err, uptimeRecordTracker) {
          console.log("[Stats] uptimeTracker: " + uptimeTracker)
          console.log("[Stats] uptimeRecordTracker: " + uptimeRecordTracker)
          console.log("[Stats] Compare: " + (uptimeTracker > uptimeRecordTracker))
          if(uptimeTracker > uptimeRecordTracker) {
              console.log("[Stats] Tracker Records updated")
              db.set('uptimerecord:tracker', uptimeTracker)
          }
      });
  });

The console output:

[Stats] uptimeTracker: 213
[Stats] uptimeRecordTracker: 99
[Stats] Compare: false

node.js
express
redis

Answer 1

It looks like you're comparing strings instead of integers, in fact:

"213" > "99" == false

while

213 > 99 == true

Try converting them to integers before doing the comparison:

parseInt(uptimeTracker) > parseInt(uptimeRecordTracker)