To add a spellchecker, use the spellcheck attribute in HTML. The attribute checks spelling and grammer for text in input elements, <textarea> elements and editable elements.
Note − It works for input elements, but not password.
Example
You can try to run the following code to add spell checker in HTML −
<!DOCTYPE html> <html> <body> Subject: <input type="text" name="sub" spellcheck="true"> <p>Add an incorrect spelling for a word above and see what happens.</p> <p contenteditable="true" spellcheck="true">This is an editable conttent, with a spelling mistake. Click to edit.</p> </body> </html>