anychart.onDocumentReady(function () {
var chart = anychart.cartesian();
{x: 'January', value: 29},
{x: 'February', value: 72},
{x: 'March', value: 250},
{x: 'April', value: 330},
chart.yGrid(0, {palette: ['#ffcc80', '#aed581']});
chart.title('Set chart yGrid by index as an object');
chart.container('container');