问题
I have a textarea and I want something to happend, every time when the user types in something, now for that I have the following two lines of code which work:
<textarea oninput="alert('')" id="write" rows="6" cols="60"></textarea>
and
<textarea onkeyup="alert('')" id="write" rows="6" cols="60"></textarea>
However, this only works with a real keyboard. When I use a virtual onscreen keyboard, the alert never gets triggered.
I have created a jsfiddle and this is the javascript:
$(function(){
var $write = $('#write'),
shift = false,
capslock = false;
$('#keyboard li').click(function(){
var $this = $(this),
character = $this.html(); // If it's a lowercase letter, nothing happens to this variable
// Shift keys
if ($this.hasClass('left-shift') || $this.hasClass('right-shift')) {
$('.letter').toggleClass('uppercase');
$('.symbol span').toggle();
shift = (shift === true) ? false : true;
capslock = false;
return false;
}
// Caps lock
if ($this.hasClass('capslock')) {
$('.letter').toggleClass('uppercase');
capslock = true;
return false;
}
// Delete
if ($this.hasClass('delete')) {
var html = $write.html();
$write.html(html.substr(0, html.length - 1));
return false;
}
// Special characters
if ($this.hasClass('symbol')) character = $('span:visible', $this).html();
if ($this.hasClass('space')) character = ' ';
if ($this.hasClass('tab')) character = "\t";
if ($this.hasClass('return')) character = "\n";
// Uppercase letter
if ($this.hasClass('uppercase')) character = character.toUpperCase();
// Remove shift once a key is clicked.
if (shift === true) {
$('.symbol span').toggle();
if (capslock === false) $('.letter').toggleClass('uppercase');
shift = false;
}
// Add the character
$write.html($write.html() + character);
});
});
How do I change it so the onscreen keyboard will have the same effect as a regular one?
回答1:
You can trigger the input
event manually when changing the textarea
's inner html with something like this.
$('textarea').trigger('input');
Here is the updated JSFiddle link: https://jsfiddle.net/tpztp48r/4/
来源:https://stackoverflow.com/questions/35591484/oninput-event-for-jquery-onscreen-keyboard