I have 2 radio button, (input type radio),i used "checked" on the second, now, if i want to check the first radio button i need to click twice, how di i fix it ??
<label>YES</label> <input type={'radio'} name={'license'}/><br />
<label>NO</label> <input type={'radio'} name={'license'} checked={'checked'}/>
You are using uncontrolled inputs, so the React rendering cycle is interfering with the user modified state of the DOM.
If you continue using uncontrolled inputs, use defaultChecked and not checked. (See default values.)
Controlled components are recommended in most cases though.
Related
Using AngularJS and i have a radio box which retrieves the list from Database on selected.
<input type="radio" id="activeMeetingRadio" class="form-check-input mt-0 p-3" ng-model="my.model" value="Active" ng-change="call to backend">
Once i select this radio my list is fetched and radio seems clicked, now after submit the forms,i sets the form as pristine and reset the checked value of radio to blank like below which makes the radio as unchecked.
my.model='';
but the issue is, even if i click the radio again, no event gets fired until i click another radio and then click back to this radio. Seems like a default bahaviour of AngularJS form controls. Is there any way i can make this radio fire event?
I was able to resolve this by setting the value in controller scope and then reset it using my.model='' will reset the value.
I have the following code:
<input type="checkbox" [(ngModel)]="i.checkt" [ngModelOptions]=
{standalone:true} (change)="recovery(i.checkt,i.TherapeuticArea)">
{{i.TherapeuticArea}}
The problem I am facing is that with standalone:true every checkbox is checked by default and when standalone is false, the checkbox isn't working. Is there any way of setting the checkbox value to unchecked while having full functionality for the user?
You need to set the checked attribute on the input like the following:
<input type="checkbox" [(ngModel)]="i.checkt" [ngModelOptions]={standalone:true}
(change)="recovery(i.checkt,i.TherapeuticArea)" [checked]="i.checkt">
But I would recommend #Florian's comment of using a FormControl to manage inputs from the UI. It will save you a lot of time and makes it easier to maintain in my opinion.
I have the radio group:
<input type="radio" name="menubar" id="menubar_1" checked="{{a::change}}" > A <br>
<input type="radio" name="menubar" id="menubar_2" checked="{{b::change}}" > B <br>
Full example on Plunker
I need to track the checked propery, but after I check-up the input, the variable will always be TRUE. Maybe it a bug?
Also I can't get work 'if' template.
And one more question: how to set default checked property?
The problem is that change event only fires when you check a radio button, not when you uncheck it. So always you check it, it goes to true, and when you uncheck it, it dosn't trigger change event as you can see in this answer
For the same reason, the dom-if never disappears.
That doesn't happen with checkbox as you can check in this plnkr, where binding and dom-if is working with the result of checkbox.
I'm using some radio buttons to influence the behavior states of a jQuery widget.
That widget can be used in a form but, since these radios don't contain any actual data, I don't want them to submit noise to the server, or cause naming conflict to whoever will use the widget in his form.
Here are two potential solution starts, not yet satisfying though :
remove the name attribute : seems to work fine for other inputs, but turns my radios into checkboxes : it kills the link between them so selecting one doesn't unselect the others. Is there an HTML way (i.e. other than Javascript event) to bind them without a name attribute ?
disable the input : As expected, nothing is submitted, but the radios become grey and can't be clicked. Is there any way that they stay clickable yet unsubmittable, like disabled at submit time ?
As far as possible, I'm rather looking for a cross-browser solution.
Try call a function before submit, that disables the radio buttons.
function disableBtn() {
document.getElementById('idbtn1').setAttribute('disabled', 'disabled');
document.getElementById('idbtn2').setAttribute('disabled', 'disabled');
return true;
}
Then, in form:
<form action="file" method="post" onsubmit="return disableBtn()">
Try this:
<form>
<input type="radio" name="group1" value="1" form="">
<input type="radio" name="group1" value="2" form="">
</form>
This still uses the name attribute which is required for radio buttons, and it also leaves the inputs enabled for interaction. No JavaScript code, no during-submit patching of the document in hope that the submit will turn out fine and destroying the document before submit will leave no visible traces.
The form="" attribute indicates that these input elements are not included in their parent form. Actually you're supposed to put the ID of another existing <form> element in this attribute, but then again, by the HTML standard, you're probably not supposed to exclude radio buttons from a form. So this hack is the only solution to the problem. (Doesn't work in Internet Explorer, but what does today.)
I'm intending to use this method for radio button groups that are in a data table which is populated from a <template> element. In this case, there will be a radio group in each table row, so their number is unknown. But since the name attribute is the only way to build radio button groups, they'll need to get counting names assigned. Since the table data is put in a JSON field before submitting anyway, I don't need field names for a form submit. Radio buttons do need names for themselves, but this method will still exclude them from being submitted.
Here's the html for my button, according to Chrome:
<input checked="" type="radio" class="edit bindable" id="communicationAddresses[0].defaultAddress" name="EMAIL.default">
When I run this in my javascript console, the output output is "false"
$("input[type=radio]:first").attr("checked")
The actual UI element is visibly not selected. When I run this code, the button becomes visibly selected:
$("input[type=radio]:first").attr("checked", true)
Looking back at the html in Chrome, I see almost exactly the same thing I saw before. The only difference is that "checked" is now at the end of the tag instead of the beginning?
<input type="radio" class="edit bindable" id="communicationAddresses[0].defaultAddress" name="EMAIL.default" checked="">
A bit more information: there is another radio group lower down on the page. When I remove this second radio group, the first acts as expected. They are distinct groups. It is possible to manually select buttons from each one.
What's going on here? Why wasn't the button visibly selected to begin with?
##### EDIT
The button was selected to begin with, but wound up getting deselected due to a bug in some event binding code I was running.
The checked attribute corresponds to the checkbox's default checkedness, not its current checkedness.
In other words, the checked attribute corresponds to the defaultChecked javascript property, and not the checked property.
jQuery's $("foo").attr("checked", true) sets the checked javascript property, but doesn't affect the checked attribute.