Does anyone know how to change the character of a textfield caret with javascript?

Question

Like the title reads, I want to change the character of a caret. Maybe make it a letter or something?

Thanks.

Answer 1

You can do something near this, but its very dificult.

1. In you textfield bind a event to keydown, for example.
2. Each char typed, you slide a floating <img> above textarea.
3. If user click in textarea, update position getting X and Y from onclick.

Obs: the font must be monospaced. Ex: if every font have 20px and user press backspace, you slide this gif to the left 20px.

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EDIT

I just made a hello world, in jsfiddle .

Of course, it's an example, but test typing and use backspace and enter to see caret go back and foward.

In this example there are a lot of bugs to fix, like:

• Use of <backspace> that cleans all line

• Use of arrows that in overflow textarea margins

• Use of mouse must update caret position...

Answer 2

在HTML / JavaScript中是不可能的。