// 超出长度转换长度
export function doStr(str, n) {
    let totalCount = 0;
    let txt = "";
    for (var i = 0; i < str.length; i++) {
        let c = str.charCodeAt(i);
        if ((c >= 0x0001 && c <= 0x007e) || (0xff60 <= c && c <= 0xff9f)) {
            totalCount++;
        } else {
            totalCount += 2;
        }
        if (totalCount <= n) {
            txt += str[i];
        } else {
            txt += '...';
            return txt
        }
    }
    return txt;
  }
  //时间往前推移半年
  export function times(val){
        var month = val.substring(0, 4) //获取年份
        var bYear = val.substring(val.length - 2, val.length - 1) == "0" //是否为带零的月份
        var year1 = val.substring(val.length - 1, val.length) //获取月份最后一个数
        var year2 = val.substring(val.length - 2, val.length) //获取整个月份
        var time, months, years
        if (bYear) {
            if (parseInt(year1) < 6) {
                months = parseInt(month - 1)
                if (parseInt(year1) < 3) {
                    years = "0" + ((12 - (6 - parseInt(year1))) + 1)
                } else {
                    years = (12 - (6 - parseInt(year1))) + 1
                }
            } else {
                months = month
                years = "0" + ((parseInt(year1) - 6) + 1)
            }
        } else {
            months = month
            years = "0" + (parseInt(year2) - 6 + 1)
        }
        time = months + '-' + years
        return time
    }
  //时间往前推移一年
  export function  times2(val){
        var month=val.substring(0,4)  //获取年份
        var bYear=val.substring(val.length-2,val.length-1)=="0"//是否为带零的月份
        var year1=val.substring(val.length-1,val.length) //获取月份最后一个数
        var year2=val.substring(val.length-2,val.length) //获取整个月份
        var time,months,years
            if(parseInt(year1)==1){
                months=parseInt(month-2)
                years="12"
            }else{
                if(bYear){
                    months=parseInt(month-1)
                    years="0"+(parseInt(year1)-1)
                }else{
                    if(year2==10){
                        years="09"
                        months=parseInt(month-1)
                    }else{
                        months=parseInt(month-1)
                        years=(parseInt(year1)-1)
                    }
                }
            }
        time=months+'-'+years
        return time
      }