【NodeJS】替换模糊查询字符里包含的正则关键字

• 问题：正则匹配时字符串中包含了一些特殊字符，导致查询失败
  
  例如，下面的字符包含了（ 和 ），这在正则中属于特殊字符

  (-)-magnocurarine
  

  正则中的特殊字符如下图
  
  

• 思路：
  
  1、映射查询字符串的索引位置和对应位置的字符

  Object {0: "(", 1: "-", 2: ")", 3: "-", 4: "m", 5: "a", 6: "g", 7: "n", 8: "o", 9: "c", 10: "u", 11: "r", 12: "a", …}
  

  2、标记出特殊字符所在的索引位置和字符信息

  Object {0: "\\(", 2: "\\)"}
  

  3、在查询字符中匹配出特殊字符

  async regex_include_keyword(param) {
      const key_word = ['$','(',')','*', '+','.','[','?','\\','^','{','}','|' ]
      let str_index = 0;
      let str_map_dict = {}
      let conflict_map_dict = {}
      for (let p of param) {
          Object.assign(str_map_dict, { [str_index]: p })
          for (let key of key_word) {
              if (p == key) {
                  Object.assign(conflict_map_dict, { [str_index]: "\\" + key })
              }
          }
          ++str_index;
      }
  
      for (let key of Object.keys(conflict_map_dict)) {
          str_map_dict[key] = conflict_map_dict[key]
      }
  
      let search_str = ""
      for (let v of Object.values(str_map_dict)) {
          search_str += v
      }
      return search_str
  }
  
  

  • 返回的结果

  "\\(-\\)-magnocurarine"