1、tran.js 存在两个不同但却有相同属性值的数组（arr1,arr2）：
data: { arr1:[ { "id":1, "name":"html", "read":108987 }, { "id":2, "name":"css", "read":5489564 }, { "id":3, "name":"javascript", "read":523698 }, { "id":4, "name":"php", "read":6985649 } ], arr2:[ { "id":1, "name":"html", "read":108987 }, { "id":2, "name":"css", "read":5489564 }, { "id":3, "name":"javascript", "read":523698 }, { "id":4, "name":"php", "read":6985649 }, { "id":5, "name":"thinkphp", "read":9898774 }, { "id":6, "name":"python", "read":6888768 }, { "id":7, "name":"wx", "read":50123698 }, { "id":8, "name":"game", "read":58496491 } ,{ "id":9, "name":"youxiu", "read":58496491 }, { "id":10, "name":"niubi", "read":58496491 } ] },2、定义一个函数getData进行去重操作：
// 去重操作 getdata(){ const a1 = this.data.arr1 const a2 = this.data.arr2 for(let i=0,len=a2.length;i<len;i++){ let flag = true for (let j = 0; j < a1.length; j++) { if(a2[i].id === a1[j].id){ flag = false break } } if(flag){ this.setData({ arr1:this.data.arr1.concat(this.data.arr1.push(a2[i])) }) } } }** 第一个for循环是 循环来源数据，第二for循环是循环已有数据，然后通过比较返回全部数据 **
== flag 用于判断是否重复，循环已有数据时，如果存在唯一属性相等（本题是id）则flag 为false，也就是排除。 ==
** 最后在进行组装连接形成新的arr1数组 **
3、结果如下：
