Is there any (?! xxx) ooo method) that can be used in js regexp

is there a / (?! xxx) ooo/ method that can be used in operation?

the results of the following concepts are equivalent to false

console.log(/(?![])/.test(""));
console.log(/(?=[^])/.test(""));

but does not include using the following method

console.log(/(?:[^])/.test(""));

Node.js regexp javascript

Mar.06,2021

node.js 10 support can solve this problem

you can use regexp-support to know whether your environmental support supports this function

lookBehindPositive

(? < =\ $) foo

const RE_NO_DOLLAR_PREFIX = /(?<!\\$)foo/g;
'$foo %foo foo'.replace(RE_NO_DOLLAR_PREFIX, 'bar'); // => '$foo %bar bar'

Previous: What if scrapy encounters Received SIG_SETMASK?

Next: Laravel same code generates picture CAPTCHA apache no problem nginx has a problem

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-64f5-1e9ae2a-475cf.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e9ae2a-475cf.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?