anychart.onDocumentReady(function () {
var chart = anychart.line([
{x: "January", value: 20},
{x: "February", value: 50},
var background = chart.background();
background.leftStroke({thickness: 5, color: "#F44336", opacity: 0.3});
chart.title("Set left stroke parameter as an object");
chart.container("container");