Update and rename removeAllWhitespaces.md to removeWhitespace.md

snippets/removeWhitespace.md

@@ -0,0 +1,16 @@
+---
+title: removeWhitespace
+tags: string,regexp,beginner
+---
+
+Returns a string with whitespaces removed.
+
+- Use `String.prototype.replace()` with a regular expression to replace all occurrences of whitespace characters with an empty string.
+
+```js
+const removeWhitespace = str => str.replace(/\s+/g,'');
+```
+
+```js
+removeWhitespace('Lorem ipsum.\n Dolor sit amet. '); // 'Loremipsum.Dolorsitamet.'
+```