Added replaceAll() term in javascript/strings

content/javascript/concepts/strings/terms/replaceAll/replaceAll.md

@@ -0,0 +1,39 @@
+---
+Title: '.replaceAll()'
+Description: 'Returns a new string by replacing all the matches of a given search value with a given replacement value.'
+Subjects:
+  - 'Web Development'
+  - 'Computer Science'
+Tags:
+  - 'Strings'
+  - 'Methods'
+CatalogContent:
+  - 'introduction-to-javascript'
+  - 'paths/front-end-engineer-career-path'
+---
+
+The **`.replaceAll()`** method returns a new string by replacing all the matches in a string of a given search value with a given replacement value.
+
+## Syntax
+
+```pseudo
+string.replaceAll(searchValue, replacementValue);
+```
+
+The `searchValue` can be either a [string](https://www.codecademy.com/resources/docs/javascript/strings) or [RegExp](https://www.codecademy.com/resources/docs/javascript/regexp).
+
+## Example
+
+Replace all the occurrences of `"scream"` with `"laugh"`:
+
+```js
+const sentence = `I scream, you scream, we all scream for ice cream.`;
+
+console.log(sentence.replaceAll('scream', 'laugh'));
+```
+
+This example results in the following output:
+
+```shell
+I laugh, you laugh, we all laugh for ice cream.
+```