echart图表x轴字数太长

版权声明： https://blog.csdn.net/u011518709/article/details/84855673

 			axisLabel:{
					formatter:function(params){
		        		var newStr = "";
		        		var n = params.length;
		        		var a = 4;
		        		var r = Math.ceil(n/a);
		        		if(n>a){
		        			for(var i = 0;i<r;i++){
		        				var tempStr = "";
		        				var start = i*a;
		        				var end = start + a;
		        				if(i==r-1){
		        					tempStr = params.substring(start,n);
		        				}else{
		        					tempStr = params.substring(start,end)+"\n";
		        				}
		        				newStr += tempStr;
		        			}
		        		}else{
		        			newStr = params;
		        		}
		        		return newStr;
		        	}	
			},