vue--品胜打印wewin

计算一行大概放置多少字符串实例相关代码：

data(){
  return{
    zh: new RegExp("[\u4E00-\u9FA5]+"),
    en: new RegExp("[A-Za-z]+"),
  }
}

formatterString(name) {
  let _width = 0;
  let arr = [110, 170, 170];//每行的总宽
  let strings = [];
  let sub_i = 0; //位置
  arr.map((total, index) => {
    if (name.length == sub_i + 1) return;
    for (let i in name) {
      i = Number(i);
      if (_width >= total) {
        _width = 0;
        name = name.substring(sub_i + 1);
        return false;
      } else {
        let obj = this.sum(_width, name[i]);
        _width = obj._width;
        strings[index] = (strings[index] ? strings[index] : "") + name[i];
        sub_i = i;
      }
    }
  });
  return strings;
 },
 sum(_width, str) {
      if (this.en.test(str)) {
        if (group1.includes(str)) {
          _width = _width + 10;
        } else if (group2.includes(str)) {
          _width = _width + 5;
        } else if (group3.includes(str)) {
          _width = _width + 3;
        } else {
          _width = _width + 7;
        }
      } else if (this.zh.test(str)) {
        _width = _width + 10;
      } else {
        //特殊字符
        if (group4.includes(str)) {
          _width = _width + 10;
        } else if (group5.includes(str)) {
          _width = _width + 5;
        } else if (group6.includes(str)) {
          _width = _width + 3;
        } else {
          _width = _width + 10;
        }
      }
      return { _width: _width, str: str };
},