js解决java中的占位符，全局替换括号中的数据

  data() {    return {        url: 'https://www.baidu.com/addUser/{id}/{userName}/{age}/app',        urlObj: {id: 9527, userName: 'zhouxingchi', age: 56},    }  }  methods:{      placeholder() {         if (this.url.indexOf("{") != -1) {            var reg = /\{(.+?)\}/g            var urlArr = this.url.match(reg)            urlArr.forEach(val => {              var valTo = val.substring(1, val.length - 1)              this.url = this.url.replace(val, this.urlObj[valTo])            })          }         },      }