The HTML <datalist> tag specifies a set of options for <input> element. You need to also add an id. Use the <option>…<option> tag inside the <datalist…</datalist> tag.
Example
You can try to run the following code to use the <datalist> tag in HTML −
<!DOCTYPE html> <html> <head> <title>HTML Datalist Tag</title> </head> <body> <p>Type the tool name:</p> <input list = "tools" /> <datalist id = "tools"> <option value = "Image Editor"> <option value = "Whiteboard"> <option value = "Image Optimizer"> <option value = "Document Viewer"> </datalist> </body> </html>