Forms with input checkbox and radio tag in HTML

In this article we will talk about HTML forms and how to use tags input of type check box y radio. These elements are very useful for interaction with the user and allow us to obtain data in a simple way. Next, we'll show you how to work with them.

input checkbox label

The label input of type check box It is used to create checkboxes, also known as checkboxes. These boxes allow the user to select one or more options from a set of possibilities.

To use a checkbox, we must add the attribute type="checkbox" to the label input. Additionally, we can specify a value for the attribute value and add a descriptive text inside the label labels.

Option 1

When the user checks a box, the value specified in the attribute will be sent value to the server if the form is submitted. If the box is not checked, the corresponding value will not be sent. This is especially useful when we need the user to select multiple options.

radio input label

The label input of type radio It is also used to create selection options, but unlike check boxes, only one option can be selected.

As with checkboxes, we must add the attribute type="radio" to the label input. We can also specify a value for the attribute value and add a descriptive text inside the label labels.

<input type="radio" name="opcion" value="1">
<label for="opcion1">Option 1</label>
<br>
<input type="radio" name="opcion" value="2">
<label for="opcion2">Option 2</label>

It is important to note that, when using the label input of type radio, we must group the options that we want to be exclusive using the same value for the attribute name. This way, only one option can be selected within the group.

Conclusions

In short, the labels input of type check box y radio They are important elements in HTML forms. With them, we can obtain user information through checkboxes and exclusive selection, respectively. It is essential to know how to use these tags and take advantage of their functionalities in our projects.

Frequently asked questions

How can I tell if a checkbox is checked?

To find out if a checkbox is checked, you can use JavaScript to access the attribute checked of the corresponding element. If the attribute has the value true, means the box is checked.

Is it possible to have multiple checkboxes checked at the same time?

Yes, it is possible to have multiple checkboxes checked at the same time. It is enough for the user to select the desired options. We can get the selected values on the server by properly processing the submitted form.

How can I preselect a radio option?

To preselect a radio option, you must add the attribute checked to the corresponding element and set its value as true. This way, the option will be checked by default when the page loads.