gauge.js Documentation

Basic usage of gauge.js

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To create an animated gauge, target a <canvas> element and instantiate the Gauge class. You can configure the appearance using setOptions() and control the value range and current value using maxValue, setMinValue(), and set().

Note: The gauge is resolution-independent and uses pure canvas, meaning it requires no external CSS or images.

var opts = {
  angle: 0.15, /// The span of the gauge arc
  lineWidth: 0.44, // The line thickness
  pointer: {
    length: 0.9, // Relative to gauge radius
    strokeWidth: 0.035 // The thickness
  },
  colorStart: '#6FADCF',   // Colors
  colorStop: '#8FC0DA',    // just experiment with them
  strokeColor: '#E0E0E0'   // to see which ones work best for you
};
var target = document.getElementById('foo'); // your canvas element
var gauge = new Gauge(target).setOptions(opts); // create sexy gauge!
gauge.maxValue = 3000; // set max gauge value
gauge.setMinValue(0);  // set min value
gauge.set(1250); // set actual value

What's inside gauge.js