这种数组如何去重

let arr = [{ name: 'li', age: 12 }, { name: 'li' age: 12 }]

除了这种方法还有啥更高效的方法去除数组里面对象重复的元素

unique (array) {
      var res = []
      for (var i = 0, arrayLen = array.length; i < arrayLen; i++) {
        for (var j = 0, resLen = res.length; j < resLen; j++) {
          if (array[i].name === res[j].name) {
            break
          }
        }
        if (j === resLen) {
          res.push(array[i])
        }
      }
      return res
    }