Novice ask json array how to insert new fields and values?

{gid:"1",is_top:"0",title:"iphone"}
{gid:"2",is_top:"0",title:"iphone"}
{gid:"3",is_top:"0",title:"iphone"}
{gid:"4",is_top:"0",title:"iphone"}

such a structure, for example, add a field called is_vip, the value is 0, how to insert each item in js (WeChat Mini Programs)?
Thank you for your advice

Jun.29,2021

arr.forEach(item => {
item.is_vip = 0
})
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1beba3e-46024.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1beba3e-46024.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?