I need to replace all the string in a variable.
var a = "::::::";
a = a.replace(":", "hi");
console.log(a);The above code replaces only the first string i.e..hi::::::
I used replaceAll but it's not working.
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2 Answers
Update: All recent versions of major browsers, as well as NodeJS 15+ now support replaceAll
Original:
There is no replaceAll in JavaScript: the error console was probably reporting an error.
Instead, use the /g ("match globally") modifier with a regular expression argument to replace:
const a = "::::::";
const replaced = a.replace(/:/g,"hi");
console.log(replaced);The is covered in MDN: String.replace (and elsewhere).
11 Comments
@VishnuChid Because
/:)/g is an invalid regular expression literal (it will result in a SyntaxError due to the "extra" closing parenthesis). Try /:\)/g instead. Please read the error messages and be precise about error messages - "not working" and "doesn't work" are very vague.
jejese
It's been many years since this answer was made, and replaceAll is now included in MDN documentation and the ECMA-262 (2021) spec, but replaceAll still isn't widely available in all browsers. Firefox is including it starting with version 77. Hopefully this update saves someone a few minutes of confusion.
mgPePe
What's that then? developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/…
Rahul Ranjan
Node JS does NOT support replaceAll !!!
DORRITO
As of node 15, node supports replaceAll.
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There is no replaceAll function in JavaScript.
You can use a regex with a global identifier as shown in pst's answer:
a.replace(/:/g,"hi");
An alternative which some people prefer as it eliminates the need for regular expressions is to use JavaScript's split and join functions like so:
a.split(":").join("hi");
It is worth noting the second approach is however slower.
4 Comments
Shem Muthanga
update 2021:
String.prototype.replaceAll() is now a valid function in JS but has no support in Node yet. Example: ` let p = 'The dog ate my homework. Bad dog.'; p.replaceAll('dog', 'goat'); console.log(p); // 'The goat ate my homework. Bad goat.' `
Max Carroll
2ality.com/2019/12/string-prototype-replaceall.html introduced in ES2021
DORRITO
Node 15 now supports replaceAll.
TV-C-1-5
stackoverflow.com/questions/1144783/… clearly shows that there is too a 'replaceAll ' in JavaScript