在JS代码中为了让数据带有指定的键传入前端，必须修改setData内通过变量传进来的key指定。
原来的源代码：
porcessDoubanData: function (moviesDouban) {var movies = [];for (var idxin moviesDouban.subjects) {var subject = moviesDouban.subjects[idx];var title = subject.title;if (title.length =6) {title = title.substring(0.6) +"...";}var temp = {title: title,average: subject.rating.average,coverageUrl: subject.images.large,movieId: subject.id}movies.push(temp)} this.setData({ movies：movies})}需要将movies修改为添加进来的参数settedKey来改变修改后代码porcessDoubanData: function (moviesDouban, settedKey) {var movies = [];for (var idxin moviesDouban.subjects) {var subject = moviesDouban.subjects[idx];var title = subject.title;if (title.length = 6) {title = title.substring(0.6) + "...";}var temp = {title: title,average: subject.rating.average,coverageUrl: subject.images.large,movieId: subject.id}movies.push(temp)}var readyData = {};readyData[settedKey] = movies;this.setData(readyData);}})
1.定义了变量readyData ={}空的Javascript对象2.readyDate[settedKey] = moives;对属性进行赋值3.this.setData(readyData);即可
本身是很简单的JS对象属性赋值，设定了readyData对象赋值属性即可，但是其本质利用了JS动态语言的特性。能体现出本身我对JS语言掌握不是很牢固，利用动态特性可以对代码进行更好的编写。
