Emulate backspace key function to up arrow key event?

Question

How can i emulate the backspace key function when i press the up arrow?

This is what i have so far and its not working :

if ( e.keycode === 38 ) {
        e.preventDefault();
        $(e.target).trigger({
            type: "keypress",
            which: 8
        };

when i hit the up arrow i want it to delete a character as if i was using the backspace key.Its for a real time javascript morse code converter http://jsfiddle.net/EnigmaMaster/sPDHL/30/ — EnigmaMaster, Apr 19 '12 at 00:09

score 3 · Answer 1 · answered Apr 18 '12 at 18:29

3

You can't trigger key presses in Javascript/JQuery for security reasons. Imagine if a website could take over your keyboard? Not a nice idea! :)

answered Apr 18 '12 at 18:29

Mathew Thompson

55,877
15
127
148

dknaack · Accepted Answer · 2012-04-18T18:40:19.583

Description

You can use jQuery's keyup method to get this done. As far as i understand you want to remove the last char in the field. Checkout my sample and this jsFiddle Demonstration

Sample

$("input").keyup(function(e) {
     if (e.which=== 38 ) {
        e.preventDefault();
        var value = $("input").val();
        var newValue = $("input").val().substring(0, value.length-1);
        $("input").val(newValue);
     }
});

More Information

jQuery.keyup()

score 2 · Answer 3 · edited May 23 '17 at 12:21

2

IDEA:

maybe you could find the current position on a textarea or something and when the upkey is presed emulate the backspace key functon

Here says how to get the current position on a text input Caret position in textarea, in characters from the start

edited May 23 '17 at 12:21

Community

1
1

answered Apr 18 '12 at 18:37

chepe263

2,774
22
38

Thats exactly what i want to do lol. I worded my question wrong – EnigmaMaster Apr 19 '12 at 00:26

Emulate backspace key function to up arrow key event?

3 Answers3

Description

Sample

More Information