如何关闭 html 输入表单字段建议？

What you want is to disable HTML autocomplete Attribute.

Setting autocomplete="off" here has two effects:

It stops the browser from saving field data for later autocompletion on similar forms though heuristics that vary by browser. It stops the browser from caching form data in session history. When form data is cached in session history, the information filled in by the user will be visible after the user has submitted the form and clicked on the Back button to go back to the original form page.

Read more on MDN Network

Here's an example how to do it.

<form action="#" autocomplete="on">
First name:<input type="text" name="fname"><br>
Last name: <input type="text" name="lname"><br>
E-mail: <input type="email" name="email" autocomplete="off"><br>
<input type="submit">
</form>

If it's on React framework then use as follows:

<input
id={field.name}
className="form-control"
type="text"
placeholder={field.name}
autoComplete="off"
{...fields}/>

Link to react docs

Update

Here's an update to fix some browsers skipping "autocomplete=off" flag.

<form action="#" autocomplete="off">
First name: <input type="text" name="fname" autocomplete="off" readonly onfocus="this.removeAttribute('readonly');"><br> Last name: <input type="text" name="lname" autocomplete="off" readonly onfocus="this.removeAttribute('readonly');"><br> E-mail:
<input type="email" name="email" autocomplete="off" readonly onfocus="this.removeAttribute('readonly');"><br>
<input type="submit">
</form>

I ended up changing the input field to

<textarea style="resize:none;"></textarea>

You'll never get autocomplete for textareas.

On Chrome, the only method we could identify which prevented all form fills was to use autocomplete="new-password". Apply this on any input which shouldn't have autocomplete, and it'll be enforced (even if the field has nothing to do with passwords, e.g. SomeStateId filling with state form values). See this link on the Chromium bugs discussion for more detail.

Note that this only consistently works on Chromium-based browsers and Safari - Firefox doesn't have special handlers for this new-password (see this discussion for some detail).

Update: Firefox is coming aboard! Nightly v68.0a1 and Beta v67.0b5 (3/27/2019) feature support for the new-password autocomplete attribute, stable releases should be coming on 5/14/2019 per the roadmap.

Update in 2022: For input fields with a type of password, some browsers are now offering to generate secure passwords if you've specified autocomplete="new-password". There's currently no workaround if you want to suppress that behavior, but I'll update if one becomes available.

use autocomplete="off" attribute

Quote:IMPORTANT

Put the attribute on the <input> element, NOT on the <form> element

I know it's been a while but if someone is looking for the answer this might help. I have used autocomplete="new-password" for the password field. and it solved my problem. Here is the MDN documentation.

autocomplete = "new-password" does not work for me.

I built a React Form. Google Chrome will autocomplete the form input based on the name attribute.

 <input
className="scp-remark"
type="text"
name="remark"
id='remark'
value={this.state.remark}
placeholder="Remark"
onChange={this.handleChange}
/>

It will base on the "name" attribute to decide whether to autofill your form. In this example, name: "remark". So Chrome will autofill based on all my previous "remark" inputs.

<input
className="scp-remark"
type="text"
name={uuid()} //disable Chrome autofill
id='remark'
value={this.state.remark}
placeholder="Remark"
onChange={this.handleChange}
/>

So, to hack this, I give name a random value using uuid() library.

import uuid from 'react-uuid';

Now, the autocomplete dropdown list will not happen. I use the id attribute to identify the form input instead of name in the handleChange event handler

handleChange = (event) => {
const {id, value} = event.target;
this.setState({
[id]: value,
})
}

And it works for me.

I had similar issue but I eventually end up doing

<input id="inp1" autocomplete="off" maxlength="1" /> i.e., autocomplete = 'off' and suggestions will be disappeared.

Adding the two following attributes turn off all the field suggestions (tested on Chrome v85, Firefox v80 and Edge v44):

<input type="search" autocomplete="off">

If you are using ReactJS. Then make this as autoComplete="off"

<input type="text" autoComplete="off" />

<input type="text" autocomplete="off"> is in fact the right answer, though for me it wasn't immediately clear.

According to MDN:

If a browser keeps on making suggestions even after setting autocomplete to off, then you have to change the name attribute of the input element.

The attribute does prevent the future saving of data but it does not necessarily clear existing saved data. Thus, if suggestions are still being made even after setting the attribute to "off", either:

• rename the input
• clear existing data entries

Additionally, if you are working in a React context the attribute naturally becomes autoComplete.

Cheers!

This solution worked for me: Add readonly attribute.

Here's an update to fix some browsers skipping the "autocomplete=off" flag.

<input type="text" name="lname" autocomplete="off" readonly onfocus="this.removeAttribute('readonly');">