I am trying to alert something whenever a drop-down box changes and whenever something is typed into an input. I don't think I can use change for input fields? What would you use for input fields? Also, what about input fields of type file? Same thing. Here is what I have so far and it's not working:
$('input#wrapper, select#wrapper').change(function(){
alert('You changed.');
});
You can bind a keypress event to the text box.
$("#wrappertext").bind("keypress", function(){
// your code
});
In your sample you have used the same id for the text box and the select box. Change this also.
when ever something is typed into an
input
change() happens in input type text happens when the value is change on blur...
try keyup() or keydown() instead.
Related
I use they keyboard from [1]. Unfortunatetly it works only with input types. But I want to run them as well on textareas. However, the current code is not able to do this. The standard code starts the keyboard with the following command:
$(document).ready(function(){
$('input').mlKeyboard();
});
Now I want to extend the code that if, I click into an input text it should show the keyboard and if I click into a textarea it should show the keyboard.
I tried:
$(document).ready(function(){
$('input').mlKeyboard();
$('textarea').mlKeyboard();
});
But then the keyboard is shown several times. Therefore I want to have an if else command to select which input element has been chosen. How can I do this?
Did you try this:
$(document).ready(function(){
$('input, textarea').mlKeyboard();
});
I have a simple Registration form and I want to make an option like there are two different fields, and what i want is simple, just when I add text to the first field it should automatically be added the same content to the next field.
$("#field1").change(function(){
$("#field2").val(this.value);
});
Demo: http://jsfiddle.net/DerekL/CcDv4/
$(function(){
$('#txt1').on('change', function(e){
$('#txt2').val($(this).val());
});
});
DEMO.
The change event only fires when 2 conditions are met:
The element loses focus;
The element has a different value property than when it got focus.
If you want the text to change as you type it, you can use jQuery together with the HTML5 input event:
//assuming `a` and `b` as text field IDs
$('#a').on('input', function() {
$('#b').val($(this).val());
});
JSFiddle
For non-HTML5 browsers, you can just extend the events map to simulate the input event:
$('#a').on('input keydown keypress keyup change blur', function() {
$('#b').val($(this).val());
});
JSFiddle
Give onchange event for first field and assign value for second field,as below
onchange="secondfieldname.value=firstfieldnamefieldname.value"
here is my jsFiddle:
http://jsfiddle.net/YJqAu/
When the user clicks on the toggle, I'd like to know the current value of the input field. You can see from the logs that jQuery is not sending back the input field value. Why is that? Ideas?
Thanks
alert($('input', $(this)).val()); // echoed out 'on' for me
The input has no value, it is a checkbox. To get whether or not the checkbox is checked you can use $(this).is(":checked").
can I use blur in a hidden field in jquery? if not, how can I track changes in a hidden field
Hidden field is hidden, it won't be visible to a user to change something. Only page author/script can change its value and if that is the case, you can use the change event to track changes.
$('#hidden_id').change(function(){
alert('Changed Value: ' + $(this).val());
});
NO, you can't in it's normal behavior.
The onchange event occurs when a control loses the input focus (blur) and its value has been modified since gaining focus.
http://www.w3.org/TR/html401/interact/scripts.html#adef-onchange
But you can do it as Sarfraz suggested. Add onchange event then explicitly trigger it every time you change the value of the hidden typed input
The 'change()' event handler doesn't work on hidden input fields. What you can do instead is something along these lines (untested!):
function hiddenOnChange(elem, function) {
if ($(elem).val()!=$(elem).getAttr('oldVal')) {
function;
}
$(elem).attr('oldVal', $(elem).val());
window.setTimeout(function(){hiddenOnchange(elem, function);}, 100);
}
Call this function with your hidden input field and the onchange function. It re-creates the onchange function by comparing the field's "current" value with a previously stored value. If nothing is changed, it re-checks in 100 msecs; If something did change, it will execute your function (I hope ;))
Hope this helps.
I have a $.change() event, but when a submit button is pressed, the change event fires again. It is only supposed to fire once when a text is inputted into a input text box.
$('input:submit', top.document).bind('click', function (e) {
alert("submitting")
});
$('input').change(function (e) {
alert("fire");
});
Edit: For whatever reason, a change event is invoked when the input button is clicked. (thanks Anthony)
The way to fix this is simply don't select the submit button.
You can try
$('input:text')
To select only text fields.
Or you can do
$('input:not(:submit)')
To select all input elements except the submit button(s).
Read about selectors here
Edit: Using <button> instead won't work. It still counts as an input field, but it's value is separate from the text displayed on the button.
$('input').change(function(e){ alert("fire") }); applies that event to ALL input elements, including <input type="submit".../>. If you really want EVERY SINGLE text input element to have a change event, you want ``$('input[type=text]').change(function(e){ alert("fire") });` Otherwise, it might be best to use an id or class.
#Mark,
You are spot on and I'd edit you if I could to help out. Maybe someday soon...
#ajowi,
Submit buttons are inputs. At least most of them are:
<input type="submit" />
So Mark,it's not that they are doing anything with the button text, it's that the input, which is a button, is being changed by act of clicking on it.
So his solutions were great. Go with
$("input:text").change