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How to disable autocomplete of an HTML input field?

HTML Web Development Front End Technology

To disable autocomplete of an input field, the code is as follows −

Example

<!DOCTYPE html>
<html>
<head>
<style>
   input{
      font-size: 18px;
      padding: 10px;
      margin: 10px;
      border:1px solid grey;
   }
</style>
</head>
<body>
<h1>Autocomplete on/off Example</h1>
<form>
First name: <input type="text" name="firstName" autocomplete="off"><br>
Last name: <input type="text" name="lastName" autocomplete="on"><br>
<input type="submit">
</form>
<h2>Type in the above fields and refresh page to see autocomplete at work</h2>
</body>
</html>