Example code for highcharts usage

xAxis: {
    type: 'category',
    title:null,
    gridLineWidth: 1,
    lineColor: "#50ae93",
    labels: {
        style: {
            fontSize: '10px'},
        formatter: function() {var labelVal = this.value;var reallyVal = labelVal;var lvl = labelVal.length;if(lvl > 8 && lvl <=16){
                reallyVal = labelVal.substr(0,8)+"<br/>"+labelVal.substring(8,lvl);
            }else if(lvl > 16 && lvl <=24){
                reallyVal = labelVal.substr(0,8)+"<br/>"+labelVal.substr(8,8)+"<br/>"+labelVal.substring(16,lvl);
            }else if(lvl > 24){
                reallyVal = labelVal.substr(0,8)+"<br/>"+labelVal.substr(8,8)+"<br/>"+labelVal.substr(16,8)+"<br/>"+labelVal.substring(24,lvl);
            }            return reallyVal;
        }
    },
    categories:[&#39;测试2016到2017学年度测试2016到2017学年度测试2016到2017学年度&#39;,&#39;测试2016到2017学年度测试2016到2017学年度测试2016到2017学年度&#39;,&#39;测试2016到2017学年度测试2016到2017学年度测试2016到2017学年度&#39;]
},

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