vue遍歷數組存放至字符串 ， 分隔

let applicationIdArr = ["張三","李四","王五","趙六"];
let applicationids = "";
applicationIdArr.filter((item,i)=>{
   if(i==applicationIdArr.length-1)
   {
       applicationids+=item;
   }
   else
   {
       applicationids+=item+",";
   }                    
})
// console.log(applicationids);