convert a character in a box to keycode number

Linh · 10-14-2003, 11:52 AM

convert a character in a box to keycode number
What is the function that allowed you to convert a text character in a text box to keyCode ?

The code below illustrate how to do it when a user press a key on a keyboard.
===================================

Code:

function show_key_value()
 {
   alert(event.keyCode)
 }

<INPUT type="text" id="Keyboard" maxlength=4 onkeyup='show_key_value()'>

david_ross · 10-14-2003, 12:41 PM

Sorry - am I missing something - you have just given the function.

Linh · 10-14-2003, 01:15 PM

Hi David_Ross

the event.keyCode function return a 65 for a character 'a'
the myString.charCodeAt(0) function return a 97 for a
character 'a'

What I was looking for is a function similar to that of charCodeAt but will return the same numberic value as that of the function event.keyCode

=====================================

Code:

function convert_to_keycode() 
{ 
myString = input_key.value 
alert(myString.charCodeAt(0)) 
} 


function show_key_value() 
{ 
alert(event.keyCode) 
} 

<LABEL for="Event Key Code Number" tabindex="3">Alphanumeric input:</LABEL> 
<INPUT type="text" name="input_key" maxlength=16 onkeyup='validate_alphanumeric_input(input_key)'> 
      
<INPUT type="button" value="convert a value to key code" onclick="convert_to_keycode(input_key)"> 
<BR> 

<BR> 
<LABEL for="Event Key Code Number" tabindex="3">Keyboard input:</LABEL> 
      
<INPUT type="text" id="Keyboard" maxlength=4 onkeyup='show_key_value()'>

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david_ross · 10-14-2003, 04:14 PM

I assume you mean you want to get the keycode needed for generating a specific character within a string? I don't think it would be possible without remembering what keys were pressed to acheive that character. Considering that you can generate "A" with usng shift and a or Caps and a.

I hope that makes sense.