使大写锁定在页面加载上

Question

How to make CAPSLOCK TurnOn Automatically on page, when capslock is OFF ,

Using Javascript

Answer 1

You cannot manipulate the caps lock state in javascript.

In general, you cannot simulate any keypress, except on the page itself. Javascript is in general sandboxed so that no website can affect anything else. Allowing it to send keypresses would allow all sorts of havoc to occur.

Answer 2

Why not use CSS to force the text to upper-case-case (and then make sure it's upper-case when you come to process the form)? this question explains how to do it with CSS and JavaScript too.

Answer 3

Have you considered capturing the keyUp event and converting all alphabetic characters to caps if they are not? Assign something like the following function to the onkeyup event of whatever fields you care about (code is from liewcf.com ):

function uppercase() {
    key = window.event.keyCode;
    if ((key > 0x60) && (key < 0x7B)) {
        window.event.keyCode = key-0x20;
    }
}

Answer 4

如果不使用外部库，则无法使用Javascript修改客户端系统设置。

Answer 5

我不认为可以，但是为什么不使用CSS属性“ text-transform”设置为“ capitalize”呢？

Answer 6

You can't, and shouldn't.

What you can do is have your input elements convert text typed in mixed case to upper case, as the text is typed or afterward.

Answer 7

I'm afraid you can't simulate key pressing in JavaScript it would be security hole. But you still can detect if caps lock is enabled. Found an example .

Answer 8

只需设置CSS样式的text-transform: capitalize并在处理表单数据时将文本通过一些大写功能。