I have a form with mainly all simple textboxes and I am using the required attribute for the fields that are required. However, I have a textarea that only needs to be required if the previous radio button is selected as "Yes", otherwise I don't want the textarea to be required. Here is the code for those 2 fields:
<input id="ElecWiFi" name="ElecWiFi" required type="radio"
value="Yes" />
<textarea id="WiFiNeeds" cols="50" name="WiFiNeeds" rows="3"
placeholder="Electricity or Wi-Fi Needs"></textarea>
How would I make the textarea required only if Yes was selected in ElecWiFi field? Thanks in advance for any help.
dr1054
add javascript to the click attribute
like so
<input id="ElecWiFi" name="ElecWiFi" required type="radio"
value="Yes" onclick="document.getElementById('WiFiNeeds').setAttribute('required', 'required')" />
Related
I want to get all values from a set of checkboxes via POST - also the ones that return false. For a single checkbox there is a solution here. It's hacky but it does at least not require Javascript. But how about this
<input name="link[]" type="checkbox"/>
<input name="link[]" type="checkbox"/>
...
A similiar solution as the one suggested in the other post would not work, because it keeps iterating:
<input name="link[]" type="hidden"/> <!-- 0 -->
<input name="link[]" type="checkbox"/> <!-- 1 -->
<input name="link[]" type="hidden"/> <!-- 2 -->
<input name="link[]" type="checkbox"/> <!-- 3 -->
...
The one other way I can think of is explicitly giving them indexes
<input name="link[0]" type="hidden"/>
<input name="link[0]" type="checkbox"/>
<input name="link[1]" type="hidden"/>
<input name="link[1]" type="checkbox"/>
<input name="link[2]" type="hidden"/>
<input name="link[2]" type="checkbox"/>
Or you could do this, without using hidden inputs:
<input name="link[0]" type="checkbox"/>
<input name="link[1]" type="checkbox"/>
<input name="link[2]" type="checkbox"/>
Then check for missing array indexes server-side.
When a form is submitted, all the form elements that have a name attribute specified for them submit their name and their value. With most form elements, the value comes from what the user inputs.
When you submit a form that has radio buttons and/or checkboxes in it, only the name/value pairs form the checked checkbox or radio button is submitted. This way, your form processing code doesn't have to sort out which buttons/boxes were checked. A consequence of this however, is that both checkboxes and radio buttons must have a value set for their value attribute. This value is how you will know which button/box was selected (receiving a name/value pair of checkbox4=true doesn't really tell you much.)
In the following code, we will know which checkboxes were checked just by looking at the data submitted to the form's action which checkboxes were checked and what the meaning of those checks were:
<input type="checkbox" name="chkStudent1" value="Mary"> Mary
<input type="checkbox" name="chkStudent2" value="John"> John
<input type="checkbox" name="chkStudent3" value="Joe"> Joe
Now, when the form is submitted, and let's say you check the second checkbox, the name/value pair of chkStudent2=John will be submitted. Your form processing code will know exactly which element was checked and the corresponding data will be available to that code.
I have the following form, where users can choose to enter either the ID or the name:
<label for="ID"><input type="radio" name="Member" id="ID"> Member ID <input id="MemberID"></label><br/>
<label for="Name"><input type="radio" name="Member" id="Name"> Last Name <input id="LastName"></label>
When I click on "Member ID or Last Name, this switches the radio buttons. However when I click on the text inputs, this has no effect on the radio buttons.
Is this the expected behavior? If so, is there any way to tweak the html to make it work?
Note: this is not a JavaScript question.
Fiddle: https://jsfiddle.net/3by5wqzw/
Yes, this seems to be the expected behaviour on chrome, microsoft edge and firefox on windows 10 and on chrome for android lollipop.
You can use a bit of javascript to solve the problem:
<label for="ID"><input type="radio" name="Member" id="ID"> Member ID <input id="MemberID" onclick="document.getElementById('ID').checked = true;"></label><br/>
<label for="Name"><input type="radio" name="Member" id="Name"> Last Name <input id="LastName" onclick="document.getElementById('Name').checked = true;"></label>
When you click on a text input, the client will automatically check the matching radio button looking it up by its id.
As an alternative, you could put the Javascript code in a function, so it looks better and is easier to edit if you have lots of radio buttons with text input associated with it:
function check_radio(element_id){
document.getElementById(element_id).checked = true;
}
<label for="ID"><input type="radio" name="Member" id="ID"> Member ID <input id="MemberID" onclick="check_radio('ID');"></label><br/>
<label for="Name"><input type="radio" name="Member" id="Name"> Last Name <input id="LastName" onclick="check_radio('Name');"></label>
In regular html, radio input types are not related to anything other than the label associated with it. Therefore any other input text fields before or after need to be hooked up via some sort of javascript.
I think I found the answer.
The w3 recommendation states:
In an HTML document, an element must receive focus from the user in order to become active and perform its tasks
The issue is that when the user clicks on the text input, the radio button loses focus and is not activated.
Source (html4): http://www.w3.org/TR/html4/interact/forms.html#focus
I want to make textarea non-editable and non-clickable using html.
I have given the "readonly=true" for the tags; however, it is still clickable but non-editable. The readonly textarea are getting selected in Safari browser. Please help. I do not want the text area and text box to get selected.
Thanks
Using readonly attribute on element means that the element is not editable, however the value of field gets submitted when the form is submitted.
While disabled element is not editable as readonly but its value doesn't get submitted on form submission.
so, if you want to submit the value of the field, use:
<input type="text" name="textbox1" readonly />
else
<input type="text" name="textbox1" disabled="disabled" />
Try disabled="disabled". This will disable textbox / textarea, so it won't be selected. Also, the value won't be submitted on form submission.
For textbox :
<input type="text" name="textbox1" disabled="disabled" />
For textarea :
<textarea name="textarea1" disabled="disabled" /></textarea>
In HTML5, only disabled attribute will also work. The value is not compulsory. However, for XHTML Strict you will need key & value pair.
<textarea disabled="disabled"></textarea>
Try this i hope it works,
<input type="text" name="country" value="anytext" readonly>
Why don't you try with
disabled="disabled"
The Submit button on this form does nothing unless I remove style="display:none" from the template=row div. Why??
(The name of each form control is populated dynamically by javascript, however, to simplify troubleshooting, I ran the form without the javascript and the problem boils down to whether or not that display tag is there).
This is what Chrome console says:
bundleAn invalid form control with name='' is not focusable.
bundleAn invalid form control with name='label' is not focusable.
bundleAn invalid form control with name='unique' is not focusable
HTML:
<form method="POST" action="/add/bundle">
<p>
<input type="text" name="singular" placeholder="Singular Name" required>
<input type="text" name="plural" placeholder="Plural Name" required>
</p>
<h4>Asset Fields</h4>
<div class="template-view" id="template_row" style="display:none">
<input type="text" data-keyname="name" placeholder="Field Name">
<input type="text" data-keyname="hint" placeholder="Hint">
<select data-keyname="fieldtype" required>
<option value="">Field Type...</option>
</select>
<input type="checkbox" data-keyname="required" value="true"> Required
<input type="checkbox" data-keyname="search" value="true"> Searchable
<input type="checkbox" data-keyname="readonly" value="true"> ReadOnly
<input type="checkbox" data-keyname="autocomplete" value="true"> AutoComplete
<input type="radio" data-keyname="label" value="label" name="label" required> Label
<input type="radio" data-keyname="unique" value="unique" name="unique" required> Unique
<button class="add" type="button">+</button>
<button class="remove" type="button">-</button>
</div>
<div id="target_list"></div>
<p><input type="submit" name="form.submitted" value="Submit" autofocus></p>
</form>
The cause seems to be HTML 5 constraint validation - it's the require attribute. Chrome has started supporting this with it's recent versions.
Apparently it seems like this is a backward compatibility issue, but you can fix it with setting the formnovalidate attribute for your submit button.
I assume that this is actually a security feature that prevents submitting supposed user data by submitting manipulated, hidden content, this quote points in that direction:
If one of the controls is not being rendered (e.g. it has the hidden attribute set) then user agents may report a script error.
Your inputs are of type text, so their purpose is to let users enter data, submitting their content while hidden is something that a user probably wouldn't want.
If you still want to submit hidden inputs while using client validation, I would suggest using <input type="hidden"> instead - I could imagine that there is no error on validation there because they are intended to be invisible.
I made a JSFiddle to explore your problem here, and I managed to fix it by adding checked to your radiobutton inputs like so: <input type="radio" data-keyname="label" value="label" name="label" required checked>. In your code above, the radio buttons are not checked, but since they are marked as required the form is failing validation and Chrome refuses to submit the form.
On form submission, how could you possibly mark a checkbox/radiobutton as required?
Source of inspiration: Pekka's answer to a question
Required checkboxes are not unusual. Practically every registration form uses some form of the "I have read and accept the User Agreement" checkbox.
If you have Opera handy try out the code below. The form won't submit unless the checkbox is checked.
<!doctype html>
<html>
<head>
<title>html5</title>
</head>
<body>
<h1>html5 test</h1>
<form action="/">
<input type="checkbox" required="required" id="cb" name="cb">
<label for="cb">required checkbox</label>
<input type="submit">
</form>
</body>
</html>
For checkboxes, the best way is probably to pre-select it and set it to disabled. Just kidding.
To ensure one radio button in a group has been selected, either start with a default choice or validate using javascript. There are no HTML-ways to do that because every possible selection is valid.
In html5 there is a required attribute for checkboxes.
They are somehow weird, so let me quote something to explain how they work.
For checkboxes, the required attribute shall only be satisfied when one or more of the checkboxes with that name in that form are checked.
For radio buttons, the required attribute shall only be satisfied when exactly one of the radio buttons in that radio group is checked.
Of course you always have to validate server side because the client can always send you whatever he desires. Just use these methods for better user experience.
I tested required attribute for Radio Buttons today on Firefox 17.0.1 on XP SP2.
It seems to comply with the specification of required attribute for radio buttons/groups. As Firefox prompts "Please select one of these options." for both of the code snippets below:
Either you set required attribute for each of the radio buttons
<input type="radio" name="gender" value="male" required="required" />
<input type="radio" name="gender" value="female" required="required" />
Or Any One of the Radio elements
<input type="radio" name="color" value="blue" />
<input type="radio" name="color" value="red" required="required" />
<input type="radio" name="color" value="green" />
Any comments and updates are welcome.
I just tried it on a radio button in Firefox 4. Adding required to one radio input, then submitting before selecting one, triggers a "Please select one of these options" tooltip.
E.g. this works:
<input type="radio" name="gender" value="m" required />
<input type="radio" name="gender" value="f" />