Jason Rowe

Be curious! Choose your own adventure.

Tag: charting

  • Getting back into JavaScript

    The last time I did any serious JavaScript was around the time Sizzle was added to JQuery, Google Chrome was brand new, and MarketWatch.com started using canvas charts. Note: Here is a quick overview of JavaScript that is as short as possible, but explains every major feature. I would also recommend following the 2ality website […]

  • Changing Chart Color by Previous Close

      I frequently get asked how to create a chart in JavaScript that shows a different line color above and below the previous close price. Here is a example of what I mean. View this test page if you want skip the details and see a working example in JavaScript/SVG At first glance, I’ve always […]