switch (val) { case '1': this.morse = true this.crcuit = true break case '2': this.morse = true this.crcuit = true this.highest = true break case '3': this.highest = true this.necessary = true break case '4': this.peak = true this.morse = true break case

缺少switch语句的结尾大括号。应该在代码最后加上一个大括号" } "来结束switch语句。同时，每一个case语句应该以冒号":"结尾。修改后的代码如下：

switch (val) {
  case '1':
    this.morse = true;
    this.crcuit = true;
    break;
  case '2':
    this.morse = true;
    this.crcuit = true;
    this.highest = true;
    break;
  case '3':
    this.highest = true;
    this.necessary = true;
    break;
  case '4':
    this.peak = true;
    this.morse = true;
    break;
}