Javascript only when cursor focus within textbox - javascript

Is it possible to run a JavaScript function only when the cursor focus is in a specific textarea?
I want to perform an action on keypress of the enter key, however I don't want this event listner to be in place just generally on the page, rather only when the cursor is in the textarea I have (id is postcontent)
As an example, the function I'm using is this:
function onEnter(){
if(characterCode == 13)
{
console.log("Enter pressed");
}
}
Just as a start while I work out the focus issue...
I also have jQuery at my disposal.

div1.onfocus=
function onEnter(){
if(characterCode == 13)
{
console.log("Enter pressed");
}
}

Here is an alternative:
var textArea = document.getElementById("postcontent");
textArea.addEventListener("keypress", handleKeyPress, false);
function handleKeyPress(e) {
var characterCode = e.charCode;
if (characterCode == 13) {
console.log("Enter pressed");
}
}
Fiddle

Related

Capture keyDown for current page only

I have forms on different pages of my applications. Upon pressing 'Enter' or 'Esc', the form on the current page must be 'Submitted' or 'Cancelled'. The keydown() function should be triggered anywhere on the page and not tied to a specific DOM element.
.js
$(document).keydown(function(e) {
if(e.which == 13) {
// enter pressed
$('#submitCreateAccountForm').click();
$('#submitForm').click();
$('#submitNewSubmissionForm').click();
}
if(e.which == 27) {
// esc pressed
$('#submitCreateAccountFormCancel').click();
$('#submitFormCancel').click();
$('#submitNewSubmissionFormCancel').click();
}
});
What should 'document' be replaced by? Thanks
try this
$(function(){
$('html').bind('keypress', function (e) {
if (e.keyCode == 13) {
//do somethings
}
else if (e.keyCode == 27) {
return false;
}
});
});
You can try this code:
$("body").keyup(function(event){ // bind keyup event to body
if(event.keyCode == 13){ // 13 - code of enter key (find for ESC)
$("#enter").click(); // bind enter press for clicking botton with id="enter" and corresponding actions
}
});

don't can use Enter key from textarea

In my project I need diable Enter key for some textbox , because i don't want post page when enter key button . I use this Code for disable Enter key :
$(document).keypress(
function (event) {
if (event.which == '13') {
event.preventDefault();
}
});
Its work fine , but when Add textarea in page , I cant enter key for break line , because Enter key disabled .
how can I enable Enter key for textarea?
I don't know if its recommended to attach a global keypress handler like that. Regardless, the easiest way out would be
$(document).on('keypress',
function (event) {
if (event.which == '13' && event.target.tagName != 'TEXTAREA') {
event.preventDefault();
}
});
In the above, you are checking the tagName of event.target to see if the element in which the enter occured is a textarea or not
However, I would recommend this approach
$('form').on('keypress', 'form',
function (event) {
if (event.which == '13') {
event.preventDefault();
}
});
This will target all input elements and not textarea elements,
You should bind your form to detect the Enter key as,
$('#formid').on("keyup keypress", function(e) {
var code = e.keyCode || e.which;
if (code == 13) {
e.preventDefault();
return false;
}
});
Here is a demo
By this you will be able to use the Enter key on your text area without submitting the form.

Run function on enter press

I have a jQuery button function that works properly and executes the code inside, what I want is when I press the Enter on the search box, it will execute the same function inside the onclick one. I don't want to copy paste the entire code of my function to the on Enter press event because that will be the wrong way to do it. This is the click event:
$("#checkScout").click(function(e){
...
}
And this is the one I tried with the on enter press
var enterKey = document.getElementById("addChannelsToScout");
enterKey.addEventListener("keydown", function (e) {
if (e.keyCode === 13) {
$("#checkScout").click(function (e);
}
});
it should be just
$("#checkScout").click();
so
$('#addChannelsToScout').keydown(function (e) {
if (e.which == 13) {
$("#checkScout").click();
//$("#checkScout").trigger('click');
}
})
Demo: Fiddle
Try:
$("#checkScout").trigger('click');
Trigger Performance
Change:
$("#checkScout").click(function(e);
To:
$("#checkScout").click();
Your code:
var enterKey = document.getElementById("addChannelsToScout");
enterKey.addEventListener("keydown", function (e) {
if (e.keyCode === 13)
{
$("#checkScout").click();//modified here
}
});
just this will work $("#checkScout").click();
var enterKey = document.getElementById("addChannelsToScout");
enterKey.addEventListener("keydown", function (e) {
if (e.keyCode === 13)
{
$("#checkScout").click();
}
});
actually you need to trigger the event. since it is already been handled it will perform the task that you have written in the event
Check Triggers here http://api.jquery.com/trigger/
$("#checkScout").trigger("click");

Line break on keydown

I have a textarea, and on each enter i want it to get blank if something has written. but my problem is; on the first enter it line breaks, and you continue to write from the second line. it only happens at the first enter. there is no problem with emptying the textarea, you just continue to write from the second line, which is the problem.
onkeydown= if(event.keyCode == 13){
sendMessage();
}
function sendMessage(user){
var message = $('#textarea').val();
$('#textarea').val('');
}
if(event.keyCode == 13) {
sendMessage();
if (event.preventDefault) event.preventDefault();
return false;
}
keydown happens before the character is entered in the textarea, so you just have to call preventDefault on the event so it doesn't enter a line break after you've called your function that clears the text-area. return false alone should be enough too if the code above is inline in the HTML, which isn't really recommended. See updated solution below:
For unobtrusiveness and back-compat, I'd recommend doing it all with jQuery:
$('#textarea_ID').keydown(function(e) {
if (e.which == 13) {
e.preventDefault();
var message = $(this).val();
$(this).val('');
//rest of your function using `message` here
}
});
Fiddle
In jQuery use the which property for the code. Then return false with e.preventDefault();
var field = $('.classname');
field.keydown(function(e){
if(e.which==13){
sendMessage();
e.preventDefault();
}
});
Simply add return false; to your keydown function. This prevents the default action of the key (a newline in this case) from being executed.
You may also want to include code to handle Internet Explorer's way of getting keycodes. Your new function would be:
onkeydown = function (e) {
// Gets keycode cross browser
e = window.event ? window.event : e;
var keycode = e.keyCode !== null ? e.keyCode : e.charCode;
// Checks if it was the enter key that was pressed (enter = keycode 13)
if (keycode === 13) {
// Calls function to do stuff
sendMessage();
// Cancels the default action of the (enter) key
return false;
}
}

How to disable Enter/Return Key After a function is executed because of it?

I have this function where #text_comment is the ID of a textarea:
$('#text_comment').live('keypress',function (e) {
if(e.keyCode == 13) {
textbox = $(this);
text_value = $(textbox).val();
if(text_value.length > 0) {
$(this).prev().append('<div id="user_commenst">'+text_value+'</div>');
$(textbox).val("");
}
}
});
What is happening is the text is appending when the enter/return key is hit (keyCode 13), but it is also moving the text a line down, as the enter/return key is supposed to.
This is occurring even though I set the value of the textbox to "".
How about event.preventDefault()
Try and stop your event propagation (See http://snipplr.com/view/19684/stop-event-propagations/) when entering the if(e.keyCode == 13) case.
try this one event.stopImmediatePropagation()
$('#text_comment').live('keypress',function (e) {
if(e.keyCode == 13) {
e.stopImmediatePropagation()
///rest of your code
}
});
I've tested this out, this works. The enter does not create a new line.
$('#text_comment').live('keypress',function (e) {
if(e.keyCode == 13) {
textbox = $(this);
text_value = $(textbox).val();
if(text_value.length > 0) {
$(this).prev().append('<div id="user_commenst">'+text_value+'</div>');
$(textbox).val("");
}
return false;
}
});
Although I am wondering, if you don't want to ever have a new line, why are you using a textarea, why not use a input type='text' instead ?
Answer here http://jsfiddle.net/Z9KMb/

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