百度echarts实现折线图

echarts版本：4.1.0；

html代码：

<div id="countLine" style="height: 500px;"></div>

JS代码:

<script type="text/javascript">
    $(function () {
        initChart();
    });

    /*图表生成*/
    function initChart() {
        var xData = [],yData = [];
        $.ajax({
            url: context + "/service/queryApplyStatistics/countDsInfoQueryTimesOnlyByDeptData",
            async: false,
            dataType: "json",
            data: {"startDate": $('#startDate').val(), "endDate": $('#endDate').val()},
            type: "GET",
            success: function (countData) {
                $.each(countData,function (index,value) {
                    xData.push(value.APPLY_DEPT_NAME);
                    yData.push(Number(value.COUNT_NUM));
                })
            }
        });
        var barChart = echarts.init(document.getElementById('countLine'), 'macarons');
        var option = {
            tooltip: {},
            xAxis: {
                type: 'category',
                data: xData
            },
            yAxis: {
                type: 'value'
            },
            series: [{
                data: yData,
                type: 'line'
            }]
        };
        barChart.setOption(option);
    }
</script>

后台得到的数据格式为：

## xData
['测试部门1','省院案件管理室','测试部门2']

## yData
[1,5,0]

效果预览