如何反复更改数组对象中的值累加器

Question

输入：-   在这里，我有重复natraj的数组对象，因此我需要像给定示例一样附加一些计数。

var aa= [
     {name:'natraj'},
     {name:'ajai'},
     {name:'natraj'},
     {name:'ajai'},
     {name:'barath'},
     {name:'ajai'},
     {name:'barath'},
     {name:'natraj'},
   ]

输出：-

  [
     {name:'natraj'},
     {name:'ajai'},
     {name:'natraj_1'},
     {name:'ajai_1'},
     {name:'barath'},
     {name:'ajai_2'},
     {name:'barath_1'},
     {name:'natraj_2'},
   ]

Answer 1

保持连续计数：

var aa = [{name:'natraj'},{name:'ajai'},{name:'natraj'},{name:'ajai'},{name:'barath'},{name:'ajai'},{name:'barath'},{name:'natraj'},]

let counts = {}
aa.forEach(o => {
  if (counts[o.name]) {
    o.name += `_${counts[o.name]++}`
  } else {
    counts[o.name] = 1
  }
});

console.log(aa)