HtghChart

$(document).ready(function() {
	Highcharts.setOptions({
		global: {
			useUTC: false
		}
	});

  var intervalGetValue = function(a){
    var i = 1;
		setInterval(function() {
      $.get(i+'.json', {}, function(data){
  			var x = (new Date()).getTime(); // current time
  			//y = Math.random();
        var y = data.x;
        console.log(y);
        chart.series[0].addPoint([x, y], true, true);
      });
      i++;
      if(i>3){i=1;}
    }, 1000);
  };

	var chart;
	chart = new Highcharts.Chart({
		chart: {
			renderTo: 'chart-container',
			type: 'spline',
			marginRight: 10,
			events: {
				load: function() {
          intervalGetValue();
					// set up the updating of the chart each second
/*
					var series = this.series[0];
					setInterval(function() {
						var x = (new Date()).getTime(), // current time
							y = Math.random();
						series.addPoint([x, y], true, true);
					}, 1000);
*/
				}
			}
		},
		title: {
			text: 'Live random data'
		},
		xAxis: {
			type: 'datetime',
			tickPixelInterval: 150
		},
		yAxis: {
			title: {
				text: 'Value'
			},
			plotLines: [{
				value: 0,
				width: 1,
				color: '#808080'
			}]
		},
		tooltip: {
			formatter: function() {
					return '<b>'+ this.series.name +'</b><br/>'+
					Highcharts.dateFormat('%Y-%m-%d %H:%M:%S', this.x) +'<br/>'+
					Highcharts.numberFormat(this.y, 2);
			}
		},
		legend: {
			enabled: false
		},
		exporting: {
			enabled: false
		},
		series: [{
			name: 'Random data',
			data: (function() {
				// generate an array of random data
				var data = [],
					time = (new Date()).getTime(),
					i;

				for (i = -19; i <= 0; i++) {
					data.push({
						x: time + i * 1000,
						y: Math.random()
					});
				}
				return data;
			})()
		}]
	});
});

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view-source:https://hi0a.com/demo/-js/js-highchart/