有一個數組（如下）長度不固定letarr=[{name:1,img:'http://img1.png'},{name:2,img:'http://img2.png'},{name:3,img:'http://img3.png'},{name:4,img:'http://img4.png'},{name:5,img:'http://img5.png'},{name:2,img:'http://img6.png'},......]需要過濾name值相等的相同項，然后把（需要過濾的這項的img替換到）不需要過濾且name值相等的img上如：letarr=[{name:1,img:'http://img1.png'},{name:2,img:'http://img6.png'},{name:3,img:'http://img3.png'},{name:4,img:'http://img4.png'},{name:5,img:'http://img5.png'},//{name:2,img:'http://img6.png'},這一項過濾刪除掉。這項的img值需要賦值給（不需要過濾且name值相等的img上）......]