小程序 数据处理 摘取有用数据

processDoubanData: function (moviesDouban) {
    var movies = [];//定义一个数组，在数据绑定时wx:for 可使用数组中各项的数据重复渲染该组件,其实就是把摘取了有用的数据存放在了movies
    for (var idx in moviesDouban.subjects) {//for...in 语句循环遍历数组 
      var subject = moviesDouban.subjects[idx];//获取数组里的每一个对象
      var title = subject.title;
      if (title.length >= 6) {
        title = title.substring(0, 6) + "...";
      }
      // [1,1,1,1,1] [1,1,1,0,0]
      var temp = {
        stars: util.convertToStarsArray(subject.rating.stars),
        title: title,
        average: subject.rating.average,
        coverageUrl: subject.images.large,
        movieId: subject.id
      }
      movies.push(temp)
    }this.setData({movies:movies});
  }

      var movies = [];
        var temp = {
            stars: 1,
            title: 2,
            average: 3,
            coverageUrl: 4,
            movieId:5
        }
        movies.push(temp);
        console.log(movies);
//[{stars: 1, title: 2, average: 3, coverageUrl: 4, movieId: 5}]