How to replace with regex in javascript

Asked Apr 26 '18 at 06:11

Active Apr 26 '18 at 06:42

Viewed 57 times

I want to replace string X.Y.Z[X.Y.Z] to X_Y_Z[X_Y_Z] from my string. So I am using regex where first I am escaping. escapeRegExp is working fine but replaceAll is not replacing.

https://jsfiddle.net/txp9mecs/1/

let main = "X.Y.Z[X.Y.Z]";

function escapeRegExp(str) {
  return str.replace(/([.*+?^=!:${}()|\[\]\/\\])/g, "\\$1");
}

function replaceAll(str, find, replace) {
  return str.replace(new RegExp("\\b" + escapeRegExp(find) + "\\b", "g"), replace);
}

console.log(replaceAll("dfs X.Y.Z[X.Y.Z] dfs", main, "X_Y_Z[X_Y_Z]"))

Does anyone know what I am doing here ?

asked Apr 26 '18 at 06:11

N Sharma

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`"X.Y.Z[X.Y.Z]".replace(/\./g, '_')` You mean like that? – StudioTime Apr 26 '18 at 06:16
Before replace I want to escape all special characters not only `.` – N Sharma Apr 26 '18 at 06:20
Use `pattern = new RegExp("(^|\\W)" + escapeRegExp(find) + "(?!\\w)");` and then instead of `replace`, `"$1" + replace(/\$/g, "$$$$")`. – Wiktor Stribiżew Apr 26 '18 at 06:38
@WiktorStribiżew I didn't get you . can you write snippet ? I am trying `function replaceAll(str, find, replace) { const pattern = new RegExp("(^|\\W)" + escapeRegExp(find) + "(?!\\w)"); return str.replace("$1" + replace(/\$/g, "$$$$"), replace); }` – N Sharma Apr 26 '18 at 06:42
1

I meant `replace.replace(/\$/g, "$$$$")`... See https://jsfiddle.net/no97hn2g/ – Wiktor Stribiżew Apr 26 '18 at 06:44
1

thank you so much :) it worked – N Sharma Apr 26 '18 at 06:50

How to replace with regex in javascript

0 Answers0