Is there any (?! xxx) ooo method) that can be used in js regexp - Codes Helper - Programming Question Answer

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'

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