Hexadecimal string type to number type

problem description

such as the question,

let a = "0xc22458";
let b = 0xc22458;
typeof a;    //string
typeof b;    //number

now there is a, how can we turn it into b

Oct.27,2021

parseInt(a, 16) 
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-64f5-1eb7507-2644.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1eb7507-2644.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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