js正则匹配${XXX}

正则匹配${XXX}

判断字符串${}里的内容是否是指定的数组里的

 buttonArr: ["${aaa}", "${bbb}", "${identifier}"],
 created() {
    this.getPlaceholder('/.ota/device/inform/${aaa}/${bbb}')
  },

  getPlaceholder(url) {
      let reg_g = /\$\{(.*?)\}/g;//(.*?)\}表示匹配任意字符到离它最近的'}'
      let result = url.match(reg_g);
      console.log(result)
      let isFlag = true;
        result.map((item) => {
          let index = this.buttonArr.indexOf(item);
          if (index < 0) {

            isFlag = false;

          }
        });
  
       console.log(isFlag)
      return isFlag
    },

运行结果

若${}不是指定的字符

this.getPlaceholder('/.ota/device/inform/${aaa}/${ccc}')