echart纵坐标标签特别长换行显示

yAxis : [
{
type : 'category',
data : name,
axisLabel: { //坐标轴刻度标签的相关设置。
textStyle: {
color: '#000',
fontStyle: 'normal',
fontFamily: '微软雅黑',
fontSize: 12,
},
interval : 0,
formatter : function(params){
var newParamsName = "";
var paramsNameNumber = params.length;
var provideNumber = 38;
var rowNumber = Math.ceil(paramsNameNumber / provideNumber);
if (paramsNameNumber > provideNumber) {
for (var p = 0; p < rowNumber; p++) {
var tempStr = "";
var start = p * provideNumber;
var end = start + provideNumber;
if (p == rowNumber - 1) {
tempStr = params.substring(start, paramsNameNumber);
} else {
tempStr = params.substring(start, end) + "\n";
}
newParamsName += tempStr;
} } else {
newParamsName = params;
}
return newParamsName
}
},
}
]