Can i use replaceAll in javascript?

Question

I didn't see replaceAll in String.prototype,but MDN has mentioned this function.When i use it,it will throw a TypeError:xxx.replaceAll is not a function?Is replaceAll the future ECMA standard?

See the TC39 proposals list. It’ll be part of the ECMAScript 2021 standard which will be officially released in a year. — Sebastian Simon
– Sebastian Simon, Commented Jul 5, 2020 at 12:47

Serg Tomcat · Accepted Answer · 2020-07-05 12:35:37Z

3

Check your browser. This method is pretty new, so it's not advisable to use it yet (or implement substitute if it's not supported by current browser)

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

Something like:

if (!String.prototype.replaceAll)
{
    String.prototype.replaceAll = function(search, replace){
      return this.split(search).join(replace);
    }
}

answered Jul 5, 2020 at 12:35

Serg Tomcat

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3 Comments

oxygen Over a year ago

Not supported in the latest version of Chrome.😥😥😥😥

Sebastian Simon Over a year ago

Oh, that polyfill (well, it isn’t really one) isn’t correct for most regular expressions. Anything with capture groups is likely going to produce different results and any non-global regex won’t fail, as it should, according to spec. Using the empty string will also produce different results.

stwr667 Over a year ago

This is a simpler alternative: "Substitute X".replace(/X/g, "me"). Also more performant than split and join. See caniuse.com/mdn-javascript_grammar_regular_expression_literals.

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