jQuery is a fast and concise JavaScript Library that simplifies HTML document traversing, event handling, animating, and Ajax interactions for rapid web development.
jQuery Check Radio Button is a plugin that allows you to easily check whether a radio button is checked or not. It is very useful when you need to check a number of radio buttons on a web page.
To use the jQuery Check Radio Button plugin, you first need to include the jQuery library and the jQuery Check Radio Button plugin in your HTML document.
Next, you need to add a set of radio buttons to your HTML document.
The jQuery Check Radio Button plugin will automatically detect the name attribute of the radio buttons and will add a class called “checked” to the radio button that is checked.
You can then use the jQuery Check Radio Button plugin to check whether a radio button is checked or not.
$(function(){
$(“input[name=’fruit’]”).checkRadioButton();
});
The jQuery Check Radio Button plugin is available for download on the jQuery website.
Contents
- 1 How do you checked radio in jQuery?
- 2 How do you check a radio button is checked?
- 3 How do you check radio button is checked or unchecked in jQuery?
- 4 How check radio button is empty or not in jQuery?
- 5 Is checked checkbox jQuery?
- 6 How do you check and uncheck a radio button in HTML?
- 7 How can I check whether a radio button is selected with Javascript?
How do you checked radio in jQuery?
Radio buttons are used to allow users to make one choice from a limited number of options.
In this article, we’ll show you how to check radio buttons in jQuery.
To check a radio button in jQuery, you can use the isChecked() method.
For example, let’s say you have the following radio buttons:
To check the value of the “flowers-1” radio button, you can use the following code:
$(“input[name=’flowers’]”).isChecked(“rose”);
This will return true if the “flowers-1” radio button is checked, and false if it is not.
There may be times when you need to know whether a radio button is checked or not. In this article, we will show you how to do that.
To check if a radio button is checked, you can use the isChecked() method. This method returns a boolean value, which indicates whether the radio button is checked or not.
Here is an example:
if (radioButton1.isChecked()) {
//do something
}
The above code will check if the radio button1 is checked. If it is, then the code inside the curly braces will be executed.
You can also use the isEnabled() method to check if a radio button is enabled. This method also returns a boolean value.
jQuery offers a couple of ways to check if a radio button is checked or unchecked.
The simplest way is to use the is() function. This function takes a single argument, which is the jQuery object of the radio button you want to check.
If the radio button is checked, the is() function will return true. If the radio button is unchecked, the is() function will return false.
Here’s an example:
$(“#myRadioButton”).is(“:checked”);
This code will check if the radio button with the ID of “myRadioButton” is checked. If it is, the is() function will return true. If it isn’t, the is() function will return false.
You can also use the jQuery has() function to check if a radio button is checked. The has() function takes a single argument, which is the jQuery object of the radio button you want to check.
If the radio button is checked, the has() function will return true. If the radio button is unchecked, the has() function will return false.
Here’s an example:
$(“#myRadioButton”).has(“:checked”);
This code will check if the radio button with the ID of “myRadioButton” is checked. If it is, the has() function will return true. If it isn’t, the has() function will return false.
There might be a situation when you want to check whether a radio button is empty or not. You can do this using the jQuery empty() function.
The empty() function checks whether the DOM node or array is empty. If it is, then it returns true. If it is not empty, then it returns false.
To check if a radio button is empty or not, you can use the following code:
var input = $(“input[type=’radio’]”);
if (input.empty()) {
console.log(“The input is empty.”);
} else {
console.log(“The input is not empty.”);
}
Is checked checkbox jQuery?
Is checking a checkbox with jQuery really necessary?
In a word, yes. While it’s possible to check a checkbox without jQuery, using the library makes the process a good deal simpler.
Let’s take a look at an example. Say you have a form with a number of checkboxes. You want to know whether or not at least one of them is checked. Without jQuery, you might do something like this:
var checked = false;
for (var i = 0; i < input_checkboxes.length; i++) {
if (input_checkboxes[i].checked) {
checked = true;
}
}
return checked;
With jQuery, on the other hand, it’s a lot simpler. You can use the .each() function to iterate through the checkboxes, and then use the .checked property to determine whether or not any of them are checked. Here’s an example:
$(input_checkboxes).each(function() {
var checked = $(this).checked;
});
return checked;
As you can see, using jQuery makes it a lot simpler to work with checkboxes.
How do you check and uncheck a radio button in HTML?
The simplest way to check or uncheck a radio button is to use the HTML checked attribute.
To check a radio button, set the checked attribute to “checked”:
checked=”checked”>Male
To uncheck a radio button, set the checked attribute to “”:
checked=””>Male
There are a few ways to check whether a radio button is selected with Javascript. One way is to use the radio button’s checked property.
The checked property is a boolean value that is true if the radio button is selected and false if it is not. You can use the following code to check the value of the checked property:
if (radioButton1.checked) {
// Do something if the radio button is checked
}
If you want to check whether more than one radio button is checked, you can use the following code:
var checkedRadioButtons = [];
for (var i = 0; i < radioButtons.length; i++) {
checkedRadioButtons.push(radioButtons[i].checked);
}
if (checkedRadioButtons.length > 0) {
// Do something if at least one of the radio buttons is checked
}