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js & replaceAll & Regex

let multi_images = "hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg hsjyimg";

"hsjyimg hsjyimg hsjyimg".replace(`hsjyimg`, ``);

// "hsjyimg".replaceAll(`hsjyimg`, ``);
"hsjyimg hsjyimg hsjyimg".replace(/hsjyimg/ig, ``);

"hsjyimghsjyimghsjyimg".replace(/hsjyimg/ig, ``);
// ""

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String.replaceAll()

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/replaceAll

https://tc39.es/ecma262/#sec-string.prototype.replaceall

const newStr = str.replaceAll(regexp|substr, newSubstr|function)

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/replace

// falg=gi
const newStr = str.replace(regexp|substr, newSubstr|function)

replaceAll & non-global RegExp

ncaught TypeError: String.prototype.replaceAll called with a non-global RegExp argument at String.replaceAll

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/replaceAll

let s = `A man, a plan, a canal: Panama`;

// all === g
s.replace(/[^0-9a-zA-Z]/g, ``);
// "AmanaplanacanalPanama"

// once
s.replace(/[^0-9a-zA-Z]/, ``);
// "Aman, a plan, a canal: Panama"

// not set global
s.replaceAll(/[^0-9a-zA-Z]/, ``);
// Uncaught TypeError: String.prototype.replaceAll called with a non-global RegExp argument

// global falg === g
s.replaceAll(/[^0-9a-zA-Z]/g, ``);
// "AmanaplanacanalPanama"

https://leetcode.com/submissions/detail/368182883/

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