可能重复:禁用使用Javascript复制/粘贴到HTML表单

我的银行似乎已禁用复制-粘贴用户名和密码.

My bank seem to have disabled copy-paste of username and password.

它是如何完成的?它会提高安全性吗?

How is it done? Does it improve security?

推荐答案

您可以禁用粘贴输入，如下所示:

You can disable paste in your input as follows:

html:

<input type="text" value="" id="myInput">

javascript:

window.onload = () => {
 const myInput = document.getElementById('myInput');
 myInput.onpaste = e => e.preventDefault();
}

谈到安全性，我不会说这会产生任何影响.您通常会使用客户端和服务器端验证用户提交的数据.

Talking about security, I wouldn't say that this makes any impact. You would usually use client side and well as server-side validation of data submitted by the user.