js中\r\n 在字符串拼接中报错

js探针开发中遇到过这样的问题； \r\n在字符串拼接的时候是有异常问题的，无法用JSON.parse去解析

function setCustomException(exceptionType, causedBy, errorDump) { 

    if (arguments.length < 1 || arguments.length > 3) {
        console.log("onEvent自定义事件参数个数错误");
      return;
    }

    // if (filterData('exceptionType', exceptionType, 'setCustomException', null, false)) {
    //   return;
    // }

    if (arguments[0]) {
      var exctptionDic = '{"exceptionType":"' + exceptionType;

      if (arguments[1]) {
        exctptionDic += '","causedBy":"' + causedBy;
      } else {
        causedBy = "";
      }

      if (arguments[2]) {
        exctptionDic += '","errorDump":"' + errorDump;
      } else {
        errorDump = "";
      }

      exctptionDic += '"}';
      console.log(exctptionDic)
      console.log(JSON.stringify(JSON.parse(exctptionDic)));
    }
  }

  setCustomException("Custom exception type123","Caused by customer.","Custom error dump 0 /\r/\n Custom error dump 1")

解决方案

function specialCharacter(str=''){
    if(str===''){
        return str
    }
    if(/\r|\n/g.test(str)){
        return str.replace(/\r/g,'\\\\r').replace(/\n/g,'\\\\n')
    }
    return str
}