IPad Disable keyevent on input - javascript

I am working on a solution that implements adding text to textboxes but I disable the normal key events and use a custom one. I disable the key event like this:
<input onkeypress="return false;" onkeydown="return false;" onkeyup="return false;" type="text">
Now this works fine on browsers(Safari, Firefox, IE) but it fails to do so on the IPad's Safari and when a user press a key, it is entered twice. Is there another way to disable key events on the input field for the ipad?

Maybe you can make the textbox completely transparent (alpha:0), place it inside a div, and add the text to the div behind the textbox.

I figured it out. Basically if you are going to customize key entry, you have to customize it on the key up and not the key down or key pressed in Javascript.

Related

Mobile numeric keyboard [0-9] in textarea

Is it possible to open up the mobile numeric keyboard in a textarea box?
The typical pattern="[0-9]*" does not seem to work with a textarea and I can't find any other information on this anywhere else. I am trying to get this working in an angular app, so is there some way to preventDefault() on the default keyboard and somehow trigger the numeric keyboard?
e.g.
<textarea id="searchBox" pattern="[0-9]*" ng-model="searchParams.searchString" rows="3" ng-blur="formatSearch()"></textarea>
Unfortunately this is not yet possible for textarea. I have searched exhaustively on this and tried many varietions of pattern and types and so on but it just is not supported for textarea.
There are two possible solutions, either you can create your own html5 custom soft keyboard and apply a trick not to open the default keyboard.
Or (more elegant I think) use a normal input with type number or type tel and attach an onkeyup listerer. When enter is pressed, you process the line into your textarea and clean plus refocus the input.
isn't possible use input?
like
<input name="numbers" type="tel">
and than style the input like a textarea.
i dont have any idea for the textarea.
You can use the global attribute inputmode in textarea to alter Android or iPhone keypad.
<textarea inputmode="numeric"></textarea>
MDN Web Docs:
https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/inputmode
A textarea can be validated via php but not in html. Below is my way of validating textarea,
$value=$_POST['value from textarea']
if(preg_match("/^[A-Za-z0-9]+$/", $value != 1) {
echo"oops";
} else {
echo "success";
}

How to get Next button on android softkeyboard in place of Go Button in phonegap

I am developing Phonegap application and have many inputs in application form. I am getting Go button on keyboard of android.I want to replace go button with next button. As clicking on Go button (as shown in image) submits form.
In android native we can specify next button in XML but for Phonegap how to specify next button in place of go button.?
Some Samsung devices have by default Next Prev button on top.
By Default there is Go button. I need Next but in Phonegap. is there any plugin for specifying that for android.
Having a "Next" button instead of "Go" is not possible with Android as of now.
Android will always display "Go" button for form input fields. "Go" is basically reflecting the same behavior as of an "Enter" button on a normal browser & keyboard. You can achieve through below code:
if (event.keyCode == 13) {
//Handling "Go" Button to move to next input field
}
OR
If your input fields are more, then data-dependency will be best solution.
If you want to prevent users from submitting the form, you can put required validations on the form using javascript, where you can specify data-dependency inside input field with required, which helps move cursor to a particular field which you specified in data-dependency.
<input type="text" id="first" data-dependency="second" />
<input type="text" id="second" data-dependency="third" />
<input type="text" id="third" />
It move focus to next fields in form until its your last field. Once last field reaches you can allow it to act as enter. So basically Go will keep moving focus to next fields until its your last field & then will submit the form.
Its been said that if have input fields without or outside the form tag means you will get next button as tab button
As far as i know there is no proper solution to get next button instead of go . There are only workarounds do it. Most common one is to capture the 'Go' button as enter key(keycode '13') in javascript and do your thing.
$('selector').on("keydown",function(event){
if (event.keyCode == 9) {
//you got tab i.e "NEXT" Btn
}
if (event.keyCode == 13) {
//you got enter i.e "GO" Btn
}
});
for tab button instead of enter
There has been also sources that already discusses these GO Vs NEXT button
have you tried the attribute enterkeyhint
The enterKeyHint property is an enumerated property defining what action label (or icon) to present for the enter key on virtual keyboards. It reflects the enterkeyhint HTML global attribute and is an enumerated property, only accepting the following values as a DOMString:
'enter' typically indicating inserting a new line.
'done' typically meaning there is nothing more to input and the input method editor (IME) will be closed.
'go' typically meaning to take the user to the target of the text they typed.
'next' typically taking the user to the next field that will accept text.
'previous' typically taking the user to the previous field that will accept text.
'search' typically taking the user to the results of searching for the text they have typed.
'send' typically delivering the text to its target.
If no enterKeyHint value has been specified or if it was set to a different value than the allowed ones, it will return an empty string.
The enterKeyHint property is an enumerated property defining what action label (or icon) to present for the enter key on virtual keyboards. It reflects the enterKeyHint HTML global attribute and is an enumerated property, only accepting the following values as a DOMString:
<main>
<h2>Using the <code>enterkeyhint</code> Attribute</h2>
<p>View this demo on a mobile device. Note the text in the "enter" key on your mobile device's virtual keyboard.</p>
<input type="text" enterkeyhint="Next">
</main>
You can simply use the following logic to let users focus on the next input field. This is a better approach, which I used in my one of the PhoneGap applications, as currently there are no 3rd party plugins which offer such functionality.
x$('#input1').on('keyup', function(e) {
var mEvent = e || window.event;
var mPressed = mEvent.keyCode || mEvent.which;
if (mPressed == 13) {
// On enter, go to next input field
document.getElementById('input2').focus();
}
return true;
});
For whom this may be of use:
I'm working on a react pwa and I was having issues getting the next button to show so users could move from one input element to the next (within the same screen). It turns out that android requires a <form> to be wrapping the input text elements. I did a series of tests:
input texts inside a (no tabindex, no attributes other than type, nothing)
input texts outside a (same as above)
input texts inside a inside a
input texts inside a outside a
Only those inputs inside a get android's default next-next-next-go behaviour where go = last input in the form.
Have you tried using the tabindex parameter on your input fields?
The default action of the keyboard should be to show next if tabindex is detected.
Example:
<input name="first" tabindex="1" /> //should show next
<input name="second" tabindex="2" /> //should show next
<input name="third" tabindex="3" /> //should show go
EditText android:imeOptions= "actionNext"

Allow Copy/Paste in a disabled input text box in Firefox browsers

I have a input text box disabled:
<input type="text" name="name" disabled="disabled" />
In IE and in Chrome you can copy and paste the value populated in that input field but in Firefox you cannot.
Firefox does not allow clipboard manipulation through JavaScript for valid security concerns.
Any suggestion? Is there a work around this?
readonly="readonly" will do the job
it should be supported by the major browsers
I don't like using readonly="readonly", ever. It leaves the field focusable and reachable via tab keypress and, if, god forbid, the user hits the backspace key while the read-only field is focused, then most browsers treat it like the user hit the 'back' button and bring up the previously viewed page. Not what you want to see happen when you're filling out a large form, especially if you are using some archaic browser that doesn't preserve the form data when you hit the 'next' button to return to it. Also very, very bad when using some single-page web application, where 'back' takes you to a whole other world, and 'next' doesn't even restore your form, much less its data.
I've worked around this by rendering DIVs instead of input fields when I need the field disabled (or PRE instead of a textarea). Not always easy to do dynamically but I've managed to make fairly short work of it with AngularJS templates.
If you have time, head over to the Mozilla Bugzilla and ask them to fix it.
tl;dr: Support for selecting and copying text in a disabled field is unreliable; use the readonly attribute or a non-input element, such as a <span> instead, if this functionality is necessary. Use JavaScript to modify the behavior of the readonly input to prevent unwanted behavior such as going back a page when someone hits the backspace key while the readonly input has focus.
*UPDATE: 2018.12.24
The spec has changed since this answer was originally posted (thanks to Wrightboy for pointing this out); it now includes the following caveat with regards to disabled fields:
Any other behavior related to user interaction with disabled controls, such as whether text can be selected or copied, is not defined in this standard.
— https://html.spec.whatwg.org/multipage/input.html#the-readonly-attribute
Disabled fields still cannot receive focus nor click events.
Because the standard does not define whether or not text within disabled controls can be selected or copied and because at least one major browser doesn't support that functionality, it's probably best to avoid relying on that behavior.
Original Answer
This is the expected behavior for a disabled field (as of the original date of this answer). IE and Chrome are being generous, but Firefox is behaving appropriately.
If you want to prevent the user from changing the value of the field, but you still want them to be able to read it, and/or copy it's value, then you should use the readonly attribute. This will allow them to set focus to the element (necessary for copying), and also access the field via the tab button.
If you are concerned about a user accidentally hitting the backspace button inside the readonly field and causing the browser to navigate back a page, you can use the following code to prevent that behavior:
document.addEventListener("DOMContentLoaded", function() {
var inputs = document.querySelectorAll('[readonly]');
for(var i=0; i < inputs.length; i++){
inputs[i].addEventListener('keydown', function(e){
var key = e.which || e.keyCode || 0;
if(key === 8){
e.preventDefault();
}
})
}
});
<input value="Hello World" readonly=readonly />
As quick answer, one can have another not disabled element to enable + copy/paste + redisable your input text, like this:
$('#btnCopy').click(function(){
$('#txtInputDisabled').removeAttr('disabled');
$('#txtInputDisabled').select();
document.execCommand("copy");
$('#txtInputDisabled').attr('disabled','disabled');
});
You can se my complete response to this post
Refer to my post to the same question. It does the following:
Makes the textbox just like readonly without using the readonly attribute on the input tag, but will honor tab index and set focus
Supports all clipboard functions win and mac with mouse or keyboard
Allows undo, redo and select all
Restrict HTML input to only allow paste
You can accomplish this in share point by utilizing the contenteditable attribute as follows with jquery.
$("#fieldID").attr("contenteditable", "false");
This will allow the user to highlight the text and copy it but will not allow them to enter anything in the field.

Remove keyboard html textBox

Im trying to simulate a interface from a touchscreen phone, one function of the app is to allow to search but i want the user only to be able to click on the buttons on the virtual keyboard i'll be displaying and not be able to use the pc keyboard.
How can i accomplish that?
Make the input readonly (to disallow keyboard input) by using the readonly attribute docs..
<input id="someid" value="initial" readonly type="text" />
you can still alter the value of it with javascript.
example: http://jsfiddle.net/XBxj6/

Image input onclick event being fired when enter button Pressed

I have a strange problem where an onclick event on an input image is being fired when i hit enter in input text box
<form id="MyForm" action="/someaction">
<input type="image" src="someimage.jpg" onclick="doStuff();$('#MyForm').submit();" />
<input type="text" name="textInput"/>
</form>
When the cursor is in the text box and i hit enter, rather than the form being submitted it calls the onclick event on the image input.
Any ideas whats going on ?
I believe pressing the 'enter' button counts as a click in many cases, including links. If you want your action to be performed only when the mouse is used, then consider using onmousedown or onmouseup instead of onclick, I'd suggest the latter in your case.
So I had a similar problem and it was only happening in IE. Chrome and firefox were working just fine. When hitting enter from the input box, it would trigger the first input type="image" which we did not want because it would send multiple requests to IE and after hitting enter a few times it would crash.
The quick and easy work around, though not the best solution, we used was to put a dummy input type="image" with an onclick return value of false before the other ones so that the one being triggered wouldn't actually fire off a request. Not the correct root solution but a good temporary one.
The onclick event is fired on input images when you hit enter. I'd wrapping an <img> in an <a>, as since you're separately calling submit(), the input element is made redundant.

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