I have the following code, and I'm kind of stuck on what to do next. The idea is when you enter text into a text area a counter tells you how many characters you have left. Once you get to the max characters I want to stop allowing characters to be entered, or delete all the characters that were entered so there are only 10 characters in the text area. I know I have to put the code where it says alert("LONG"); but I'm not quite sure what.
var maxLen = 10;
console.log("Start");
$('#send-txt').keyup(function(){
var Length = $("#send-txt").val().length;
var AmountLeft = maxLen - Length;
$('#txt-length-left').html(AmountLeft);
if(Length >= maxLen){
alert("LONG");
}
});
All of these answers are a bit odd in that they try to do a little too much. A simpler and visually more pleasing way (because it shows the text quickly being cut off) - and with with less oddities that the previous example (note how it overwrites the final key?) - is to simply cut off the number of characters on keyUp to the number that's allowed.
var maxchars = 400;
$('body').on('keyup paste', 'textarea', function () {
$(this).val($(this).val().substring(0, maxchars));
var tlength = $(this).val().length;
remain = maxchars - parseInt(tlength);
$('#remain').text(remain);
});
Note that this then also works for pasting in text, as some of the examples above don't.
Example here: http://jsfiddle.net/PzESw/5/
Here it goes. Anything beyond character limit will be removed.
$('textarea').keypress(function(e) {
var tval = $('textarea').val(),
tlength = tval.length,
set = 10,
remain = parseInt(set - tlength);
$('p').text(remain);
if (remain <= 0 && e.which !== 0 && e.charCode !== 0) {
$('textarea').val((tval).substring(0, tlength - 1));
return false;
}
})
Returning false and using .keypress() instead of .keyup() stops input once the length has been reached. Here's the example in a jsFiddle:
Updated to allow backspace.