let arr = id1name111 id2name111 id3name111 id4name111 id5name111 id6name111es6将数组中的id 变成逗号分隔的字符串 并删除最后的逗号

const arr = [ {id:1,name:'111'}, {id:2,name:'111'}, {id:3,name:'111'}, {id:4,name:'111'}, {id:5,name:'111'}, {id:6,name:'111'}, ];

const idString = arr.map(obj => obj.id).join(','); console.log(idString);