getString(obj, state){

var index=obj.lastIndexOf("\-");

if(state==0){

obj=obj.substring(0,index);

}else {

obj=obj.substring(index+1,obj.length);

}

return obj;

}

let str = “aaa-bbb-ccc”

let str1 = this.getCaption(str,0) //aaa

let str2 = item.name2 = this.getCaption(str,1) //bbb

let str3 = item.name2 = this.getCaption(str,2) //ccc