/* Options */
var options = {
// Minimum number.
min: -100,
// Maximum number.
max: 100,
// Background dash color.
dashColor: '#e5e5e5',
// Bar color.
barColor: '#007bfb',
// Bar speed.
speed: 10,
// Bar color gradient or not.
gradient: true
};
/* Constructor */
var barMeter = new zeu.BarMeter('bar-meter', options);
/* Setter */
barMeter.value = 0;
barMeter.dashColor = '#e5e5e5';
barMeter.barColor = '#007bfb';
barMeter.speed = 5;
Change bar color and speed based on the value.