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Assign an initial value to radio button as checked
(10 answers)
Closed 6 years ago.
I'm making a form for a ticking site and can't figure out how to have a button selected by default.
<form>
<input type="radio" name="gender" value="general"> General<br>
<input type="radio" name="gender" value="medium"> Medium<br>
<input type="radio" name="gender" value="high"> High
</form>
I know it's something simple but I can't seem to figure it out
You can add a checked attribute into the input tag like so.
<form>
<input type="radio" name="gender" value="general" checked> General<br>
<input type="radio" name="gender" value="medium"> Medium<br>
<input type="radio" name="gender" value="high"> High
</form>
see w3 schools for an example.
Just add the checked attribute to the relevant input.
The checked attribute is a boolean attribute.
When present, it specifies that an element should be pre-selected (checked) when the page loads.
<form>
<input type="radio" name="gender" value="general" checked> General<br>
<input type="radio" name="gender" value="medium"> Medium<br>
<input type="radio" name="gender" value="high"> High
</form>
Use the checked attribute.
<form>
<input type="radio" name="gender" value="general" checked> General<br>
<input type="radio" name="gender" value="medium"> Medium<br>
<input type="radio" name="gender" value="high"> High
</form>
Use the "checked" attribute in input where you want to check.
<form>
<input type="radio" name="gender" value="general" checked> General<br>
<input type="radio" name="gender" value="medium"> Medium<br>
<input type="radio" name="gender" value="high"> High
</form>
You can use the Checked attribute of HTML input tag:
<form>
<input type="radio" name="gender" value="general"> General<br>
<input type="radio" name="gender" value="medium"> Medium<br>
<input type="radio" name="gender" value="high" checked> High
</form>
Fiddle
Related
I need some help. The question is how to put in the "for" attribute two "id" parameters from input? or how a can do with label in other way?
<label for="address">Address: </label>
<input class="form-style" type="text" name="address" id="address"/>
<label for="gender1 gender2">Gender:</label>
<input class="gender" type="radio" name="gender" id="gender1" value="Male"/>Male
<input class="gender" type="radio" name="gender" id="gender2" value="Female"/>Female
You can't. A label is for a single form control. Each radio button should have its own label.
Use a fieldset to group multiple controls, and a legend to describe the controls with it in.
<label for="address">Address: </label>
<input class="form-style" type="text" name="address" id="address" />
<fieldset>
<legend>Gender</legend>
<input class="gender" type="radio" name="gender" id="gender1" value="Male" />
<label for="gender1">Male</label>
<input class="gender" type="radio" name="gender" id="gender2" value="Female" />
<label for="gender2">Female</label>
<input class="gender" type="radio" name="gender" id="gender3" value="Other" />
<label for="gender3">Other</label>
<input class="gender" type="radio" name="gender" id="gender4" value="Prefer not to say" />
<label for="gender4">Prefer not to say</label>
</fieldset>
Is it possible to have multiple radio button groups in a single form? Usually selecting one button deselects the previous, I just need to have one of a group deselected.
<form>
<fieldset id="group1">
<input type="radio" value="">
<input type="radio" value="">
</fieldset>
<fieldset id="group2">
<input type="radio" value="">
<input type="radio" value="">
<input type="radio" value="">
</fieldset>
</form>
Set equal name attributes to create a group;
<form>
<fieldset id="group1">
<input type="radio" name="group1">value1</input>
<input type="radio" name="group1">value2</input>
</fieldset>
<fieldset id="group2">
<input type="radio" name="group2">value1</input>
<input type="radio" name="group2">value2</input>
<input type="radio" name="group2">value3</input>
</fieldset>
</form>
This is very simple you need to keep different names of every radio input group.
<input type="radio" name="price">Thousand<br>
<input type="radio" name="price">Lakh<br>
<input type="radio" name="price">Crore
</br><hr>
<input type="radio" name="gender">Male<br>
<input type="radio" name="gender">Female<br>
<input type="radio" name="gender">Other
Just do one thing,
We need to set the name property for the same types. for eg.
Try below:
<form>
<div id="group1">
<input type="radio" value="val1" name="group1">
<input type="radio" value="val2" name="group1">
</div>
</form>
And also we can do it in angular1,angular 2 or in jquery also.
<div *ngFor="let option of question.options; index as j">
<input type="radio" name="option{{j}}" value="option{{j}}" (click)="checkAnswer(j+1)">{{option}}
</div>
in input field make name same
like
<input type="radio" name="option" value="option1">
<input type="radio" name="option" value="option2" >
<input type="radio" name="option" value="option3" >
<input type="radio" name="option" value="option3" >
To create a group of inputs you can create a custom html element
window.customElements.define('radio-group', RadioGroup);
https://gist.github.com/robdodson/85deb2f821f9beb2ed1ce049f6a6ed47
to keep selected option in each group, you need to add name attribute to inputs in group, if you not add it then all is one group.
I have this radio button,
<form class="w3-container w3-card-4">
<h2>Radio Buttons</h2>
<p>
<input class="w3-radio" type="radio" name="gender" value="male" checked>
<label >Male</label></p>
<p>
<input class="w3-radio" type="radio" name="gender" value="female">
<label >Female</label></p>
<p>
<input class="w3-radio" type="radio" name="gender" value="" disabled>
<label>Don't know (Disabled)</label></p>
</form>
The problem is when I click on the label text the radio button is not selected. is there a way to fix this?
Just add id for the radio buttons and for keyword near label boxes.
<form class="w3-container w3-card-4">
<h2>Radio Buttons</h2>
<p>
<input class="w3-radio" type="radio" name="gender" id="m1" value="male" checked>
<label for="m1">Male</label></p>
<p>
<input class="w3-radio" type="radio" name="gender" id="m2" value="female">
<label for="m2">Female</label></p>
<p>
<input class="w3-radio" type="radio" name="gender" value="" disabled>
<label>Don't know (Disabled)</label></p>
</form>
Now you click the text label the radio button gets selected.
Your form inputs need an ID and your labels need to reference that.
So for example:
<input class="w3-radio" type="radio" name="gender" value="male" checked id="gender-male">
<label for="gender-male">Male</label></p>
From the spec
The for attribute may be specified to indicate a form control with which the caption is to be associated. If the attribute is specified, the attribute's value must be the ID of a labelable element in the same Document as the label element. If the attribute is specified and there is an element in the Document whose ID is equal to the value of the for attribute, and the first such element is a labelable element, then that element is the label element's labeled control.
you need to include input inside label tag.
<form class="w3-container w3-card-4">
<h2>Radio Buttons</h2>
<p>
<label > <input class="w3-radio" type="radio" name="gender" value="male" checked>
Male</label></p>
<p>
<label ><input class="w3-radio" type="radio" name="gender" value="female">
Female</label></p>
<p>
<label> <input class="w3-radio" type="radio" name="gender" value="" >
Don't know (Disabled)</label></p>
</form>
I was shown that in general, there are two ways of labeling radio buttons:
Method #1:
<label>Male<input type="radio" name="gender" value="m"></label>
<label>Female<input type="radio" name="gender" value="f"></label>
Method #2 (using for):
<label for="id_male">Male</label>
<input type="radio" id="id_male" name="gender" value="m">
<label for="id_female">Female</label>
<input type="radio" id="id_female" name="gender" value="f">
But what if there is a need to associate a group of radio buttons with a label?
i.e:
<label>What is your gender?
<label>Male<input type="radio" name="gender" value="m"></label>
<label>Female<input type="radio" name="gender" value="f"></label>
</label>
The questions are:
Is the way used to associate the "What is your gender?" label above correct?
Is there a way to associate "What is your gender?" that corresponds to Method #2 (i.e. using for)?
use method #2 like this:
<form action="" method="post">
<fieldset>
<legend>What's your gender?</legend>
<label for="id_male">Male</label>
<input type="radio" id="id_male" name="gender" value="m">
<label for="id_female">Female</label>
<input type="radio" id="id_female" name="gender" value="f">
</fieldset>
</form>
See more about fieldset
A good solution is using fieldset/legend combination:
<form>
<fieldset>
<legend>Gender</legend>
<input type="radio" name="gender" value="male" checked> Male<br>
<input type="radio" name="gender" value="female"> Female<br>
<input type="radio" name="gender" value="other"> Other
</fieldset>
</form>
Here's a fiddle
Is it possible to have multiple radio button groups in a single form? Usually selecting one button deselects the previous, I just need to have one of a group deselected.
<form>
<fieldset id="group1">
<input type="radio" value="">
<input type="radio" value="">
</fieldset>
<fieldset id="group2">
<input type="radio" value="">
<input type="radio" value="">
<input type="radio" value="">
</fieldset>
</form>
Set equal name attributes to create a group;
<form>
<fieldset id="group1">
<input type="radio" name="group1">value1</input>
<input type="radio" name="group1">value2</input>
</fieldset>
<fieldset id="group2">
<input type="radio" name="group2">value1</input>
<input type="radio" name="group2">value2</input>
<input type="radio" name="group2">value3</input>
</fieldset>
</form>
This is very simple you need to keep different names of every radio input group.
<input type="radio" name="price">Thousand<br>
<input type="radio" name="price">Lakh<br>
<input type="radio" name="price">Crore
</br><hr>
<input type="radio" name="gender">Male<br>
<input type="radio" name="gender">Female<br>
<input type="radio" name="gender">Other
Just do one thing,
We need to set the name property for the same types. for eg.
Try below:
<form>
<div id="group1">
<input type="radio" value="val1" name="group1">
<input type="radio" value="val2" name="group1">
</div>
</form>
And also we can do it in angular1,angular 2 or in jquery also.
<div *ngFor="let option of question.options; index as j">
<input type="radio" name="option{{j}}" value="option{{j}}" (click)="checkAnswer(j+1)">{{option}}
</div>
in input field make name same
like
<input type="radio" name="option" value="option1">
<input type="radio" name="option" value="option2" >
<input type="radio" name="option" value="option3" >
<input type="radio" name="option" value="option3" >
To create a group of inputs you can create a custom html element
window.customElements.define('radio-group', RadioGroup);
https://gist.github.com/robdodson/85deb2f821f9beb2ed1ce049f6a6ed47
to keep selected option in each group, you need to add name attribute to inputs in group, if you not add it then all is one group.