字符串和Unicode互转

字符串转Unicode

STH(str){
      let val="";
      for(let i = 0; i < str.length; i++){
        if(val === "")
          val = str.charCodeAt(i);
        else
          val += "," + str.charCodeAt(i);
      }
      return val;
    },
    

Unicode转字符串

HTS(str) {
      let val = ''
      let arr = str.split(',')
      for (let i = 0; i < arr.length; i++) {
        val += String.fromCharCode(arr[i])
      }
      return val
    }