How to clear radio button in Javascript?

Question

I have a radio button named "Choose" with the options yes and no. If I select any one of the options and click the button labeled "clear", I need to clear the selected option, using javascript. How can I accomplish that?

Solution 1

You don't need to have unique id for the elements, you can access them by their name attribute:

If you're using name="Choose", then:

• With jQuery it is as simple as:

  $('input[name=Choose]').attr('checked',false);
  

• or in pure JavaScript:

     var ele = document.getElementsByName("Choose");
     for(var i=0;i<ele.length;i++)
        ele[i].checked = false;
  

  Demo for JavaScript

Solution 2

If you do not intend to use jQuery, you can use simple javascript like this

document.querySelector('input[name="Choose"]:checked').checked = false;

Only benefit with this is you don't have to use loops for two radio buttons

Solution 3

This should work. Make sure each button has a unique ID. (Replace Choose_Yes and Choose_No with the IDs of your two radio buttons)

document.getElementById("Choose_Yes").checked = false;
document.getElementById("Choose_No").checked = false;

An example of how the radio buttons should be named:

<input type="radio" name="Choose" id="Choose_Yes" value="1" /> Yes
<input type="radio" name="Choose" id="Choose_No" value="2" /> No

Solution 4

An ES6 approach to clearing a group of radio buttons:

    Array.from( document.querySelectorAll('input[name="group-name"]:checked'), input => input.checked = false );

Solution 5

Wouldn't a better alternative be to just add a third button ("neither") that will give the same result as none selected?

View more solutions

Comments

[i2ijeya]

If i have one common id means, then how could i proceed?

[Shawn Steward]

You need to change it to separate IDs. You should not have more than one of the same ID on a page. You need to use the same Name to make it a radio button group, but the ID has to be unique.

[David Andersson]

@i2ijeya I would use a library such as jquery.com where I could select by class if I wanted to select more radio buttons at once. You could also use document.getElementsByName("Choose").

[Shawn Steward]

That won't actually work if NO is checked because javascript will never see the 2nd element with the same ID.

[Shawn Steward]

While jQuery is great, it does not need to be used for every little bit of JavaScript. In this case it would just be unnecessary overhead for something that's pretty simple to do in plain JavaScript.

[Josh]

-1. It's invalid HTML to have multiple elements with the same ID.

[NVRAM]

Actually, this is what David Andersson suggested. I guess I missed his comment before I posted.

[NVRAM]

As David says, you can access by name, so id isn't required for this function. Also, I suspect a typo -- your value is the same for both buttons.

[Filini]

I quote this solution. Radio buttons, as a UI element, are not meant to be reset (ie: none of them checked). They are designed to start with 1 option checked, and the possibility to change it. You may consider to change your radio buttons to a dropdown list: {empty}|Yes|No

[i2ijeya]

+1 Its really working NVRAM.. Thanks and i am choosing this as a my accepted answer. Thanks everyone for your valuable answers.

[Shawn Steward]

@Filini Windows forms programming has 3-state radio buttons, not sure why they can't be used for the Web.

[Filini]

@Shawn, are you sure you are not thinking about tri-state checkboxes? Anyway, how does this relate to the possibility to reset a radio button?

[Umesh]

@Filini - sometimes you might need to reset the radio buttons, all unchecked. I faced situation in a Quiz App - when user restarts the quiz, all the options (radio buttons) should be unchecked (created in AngularJS).

[Irfan Yusanif]

in jquery version above 1.6 use $('input[name=Choose]').prop('checked',false);

[mahi_0707]

Even when we have same id it is possible to clear selection. See my answer below

[Manny Alvarado]

I'm having an issue with this js code. When you reset a radio groud, whenever I select the same value again, I get an undefined