I have a textbox and I want to use the data in it every time something is entered; letter by letter.
What is happening is that when a value is entered, the Javascript is being executed before the value is actually put into the textbox, meaning that it always lags one character behind.
$(document).ready(
function() {
$('#test').keypress(
function() {
var value = document.getElementById('test').value;
alert(value);
});
})
<input id="test" type="text" />
Here's whats happening:
input alert
w ""
e "w"
a "we"
l "wea"
t "weal"
h "wealt"
Whereas I want it to happen dynamically; i.e. when I enter "w" I want the alert to contain "w" immediately after.
keypress happens before the change, yes. keyup happens after. Listen to that instead.
use keyup
$(document).ready(
function() {
$('#test').keyup(
function() {
var value = document.getElementById('test').value;
alert(value);
});
})
You should try keyup event, because keypress happens before symbol is being input in a textbox
Use keyup to read the valid after something has been entered. Here's how to do it with jQuery:
$(document).ready(function() {
$('#test').keyup(function() {
alert($(this).val());
});
});
Demo
Use the keyup event instead -:
$('#test').keyup(
function() {
var value = document.getElementById('test').value;
alert(value);
});
Use keyup instead, take a look at this:
http://jsfiddle.net/gEBc4/1/
use keyup instead
that will work
$(document).ready(
function() {
$('#test').keyup(
function() {
var value = document.getElementById('test').value;
alert(value);
});
})
Try using 'keyup' event instead of 'keypress'.
Change to:
$(document).ready(
function() {
$('#test').keyup(
function() {
var value = document.getElementById('test').value;
alert(value);
});
});
Working plunk.
Related
I want to convert letters automatically on keypress, tried this
$(document).on('keypress', function(e) {
$("#nick").val().toLowerCase();
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input id=nick value="">
But when I write Uppercase letters, it doesnt convert to lowercase. Where I did mistake ?
You aren't modifying the existing value. You need to re-assign the lowercase value:
$(document).on('keypress', function(e) {
var value = $("#nick").val().toLowerCase();
$("#nick").val(value);
});
Since the keypress event won't change the last character, I would suggest listening to the input event instead. The keyup event would work as well.
Example Here
$(document).on('input', function (e) {
e.target.value = e.target.value.toLowerCase();
});
Without jQuery:
Example Here
document.addEventListener('input', function (e) {
e.target.value = e.target.value.toLowerCase();
});
you gotta use the converted text somewhere, right? :)
$(document).on('keypress', function(e) {
$("#nick").val($("#nick").val().toLowerCase());
});
UPDATE
if you use keyup it'll work as desired: DEMO
$(document).on('keyup', function(e) {
$("#nick").val($("#nick").val().toLowerCase());
});
you can also use below approach.
$(document).on('keyup','#nick',function(e){
$(this).val(e.currentTarget.value.toLowerCase());
})
$(document).on('keyup','#nick',function(e){
$(this).val(e.currentTarget.value.toLowerCase());
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input id="nick" value="">
I have an input field in my code: <input type=text name=code id=code>.
What I want to do is to convert a specific text to another one as the user types in the field.
Let me explain more. When the user enters 31546 in the input, I want that text to directly convert to HELLO.
I know this can be done using JavaScript/jQuery, but I can't have any ideas on how to achieve this. How can I?
P.S. If it's easier to work with a textarea, I'm ready to change my input to a textarea.
EDIT: I got a code from this StackOverflow post which detects any changes to an element,
$('.myElements').each(function() {
var elem = $(this);
// Save current value of element
elem.data('oldVal', elem.val());
// Look for changes in the value
elem.bind("propertychange change click keyup input paste", function(event){
// If value has changed...
if (elem.data('oldVal') != elem.val()) {
// Updated stored value
elem.data('oldVal', elem.val());
// Do action
....
}
});
});
but I am not sure how to utilise this for what I want.
Please bear with me as I am yet a fledgling in this domain.
Thank you.
One option is to set up a keyup event for your input and then replace the value as the user types. For example:
$('input').keyup(function () {
var val = $(this).val();
var newVal = val.split('31546').join('HELLO');
if (newVal !== val) {
$(this).val(newVal);
}
});
You can use keyup event as,
$(document).on('keyup', '#code', function() {
$('#code').val(convertedValue($('#takeInput').val()));
})
function convertedValue(val) {
return 'hello';
}
This may help you :--
<input type="text" id="code">
$('#code').bind('change click keyup onpaste', function(ele){
var origVal = ele.target.value;
if(origVal.indexOf("123") !== -1){
ele.target.value = origVal.replace("123","Hello");
}
});
i have one textfield whose id is date. i want to give an dialog boxmsg when textfield is empty. i am tried the following code a lot times but it never going to execute button click function. Why this happen please tell me
var val = $('#date').val();
$(document).ready(function() {
$("#btnSubmit").click(function() {
if (val != null) {
$("#dialog").dialog();
return false;
}
});
});
Move var val = $('#date').val(); inside click handler so that val will always contain the latest value in the #date input.
$(document).ready(function() {
$("#btnSubmit").click(function() {
var val = $('#date').val().trim(); // Remove leading and trailing spaces
// Moved inside click handler
if (!val) { // Check if falsy value
$("#dialog").dialog();
return false;
}
});
});
Looks like your val variable scope is different. So you can try something like:
$(document).ready(function () {
$("#btnSubmit").click(function(){
if ($('#date').val()){
$("#dialog").dialog();
return false;
}
});
});
Something like this? Gets the value when you click and alerts if it's empty?
You need to get the textbox's value when you click, otherwise it will be empty since it's going to be set ONCE, when the page loads.
$(document).ready(function () {
$("#btnSubmit").click(function(){
var textbox = $('#textbox').val();
if (textbox.length == 0){
alert();
}
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<input id="textbox" type="text" placeholder="Type here"><br>
<button id="btnSubmit">Click me</button>
I have a website url field that has the value set for returning visitors who have previously filled out the form. If they change the value, then ('keyup blur paste', function() will copy it to a div. If they do not change the value, the ('keyup blur paste', function() does not copy the value to the div
I would like to figure out how to add to this script a function that would also copy the value to the div if they do not change it, because blur only works if they click in the input before they submit the form.
Here is my current script:
$(function () {
$('#Website').on('keyup blur paste', function() {
var self = this;
setTimeout(function() {
var str = $(self).val();
$("#viewer").text(str.replace(/^http\:\/\//, ''));
}, 0)
})
});
If I get you correctly, you want to populate the div on load as well as on keyup/blur/paste? Something like this?
$(function () {
$('#Website').on('keyup blur paste', function() {
var self = this;
setTimeout(function() {
var str = $(self).val();
$("#viewer").text(str.replace(/^http\:\/\//, ''));
}, 0)
});
// just add the line below
$("#viewer").text($('#Website').val().replace(/^http\:\/\//, ''));
});
I've updated the fiddle you created to demonstrate this working: http://jsfiddle.net/8kn4V/2/
on your page load...
$('#mydiv').html('whatever the value of the cookie');
is that what you need? as they mentioned in the comments above, your question is a little confusing.
use val() for input , select and textareas, and use text() for general elements like divs.
First solution
It seems now you are using a timeout of 0. That is not necessary at all, I think. So please check out this Fiddle:
$('#website').on("keyup blur paste", function () {
var s = $(this).text();
$("#viewer").text(s.replace(/^http\:\/\//, ''));
});
Edited solution
Now it seems you also want code that update #viewer from #website even when not triggered.
Here is a second fiddle — I hope you'll give credit if this solves the problem as it stands currently.
Relevant code:
function viewerupdate(me){
var s = me.text();
$("#viewer").text(s.replace(/^http\:\/\//, ''));
}
$('#website').on("keyup blur paste", function () { viewerupdate($(this)) });
var current_viewer = $('#viewer').text();
$('#submit').click(function(){ // assumes in the case that no change was made, that the submission is done through #submit
if($('#viewer').text() == current_viewer )
viewerupdate($('#website'));
});
I want a javascript function to be triggered on key up on any input box. I tried using getElementsByTagName.onkeyup but it didn't work. Along with the solution please send a working jsfiddle. I don't want document.getElementById or onkeyup="function()" as there are many input boxes. It wont look tidy. I even tried
$(document).ready(function(){
$('input').onkeyup(function(){
calculate();
})
})
I also want a function that will add 0 to the value of each input on window.onload.
Thank You
DEMO There is no onkeyup event in jQuery tru to change to keyup
$(document).ready(function(){
$('input').keyup(function(){
calculate();
})
})
.keyup()
try
document.onkeyup = function () {
if (document.activeElement.tagName.toUpperCase() !== 'input') return;
// do sth. here
}
This should do the keyup part:
http://jsfiddle.net/pwqx7/
$(function() {
$('input').bind('keyup', function() {
alert($(this).attr('id'));
});
});
Try
$(document).ready(function() {
$(document).on('keyup', 'input', function() {
calculate();
})
})
Demo: Fiddle