Add Event listener for Click/change on Bootstrap radio buttons

Question

I'm making a shop filter and I need to dynamically get the value of the radio button that has been selected and execute a filter function with the value as a parameter.

my HTML is

<div class="btn-group-vertical btn-group-toggle pl-2" data-toggle="buttons">
    <label class="btn btn-secondary active">
        <input type="radio" name="option_all" id="option_gender" autocomplete="off" value="All" checked=""> Unisex
    </label>
    <label class="btn btn-secondary">
        <input type="radio" name="option_man" id="option_gender" autocomplete="off" value="Male"> Man
    </label>
    <label class="btn btn-secondary">
        <input type="radio" name="option_woman" id="option_gender" autocomplete="off" value="Female"> Woman
    </label>
</div>

My idea was something like

$(document).ready(function(){
    $('#option_gender').click(function(){
        filtefFunction(this.value)
    });
});

or an addEventListener('click' func()) to each radio button ... but i dont know how can i do this.

I prefer of the solution is in vanilla js, because I'm trying to advance my sills in it :) thank you

Answer 1

A few things, your input should have same name to group them together, and not use the same id. i have replaced your id with class.

 function getActive(){ console.log( document.querySelector('.option_gender:checked').value ); } document.querySelectorAll(".option_gender").forEach( input => input.addEventListener('click', getActive) ); 

 <div class="btn-group-vertical btn-group-toggle pl-2" data-toggle="buttons"> <label class="btn btn-secondary active"> <input type="radio" name="option" class="option_gender" autocomplete="off" value="All" checked=""> Unisex </label> <label class="btn btn-secondary"> <input type="radio" name="option" class="option_gender" autocomplete="off" value="Male"> Man </label> <label class="btn btn-secondary"> <input type="radio" name="option" class="option_gender" autocomplete="off" value="Female"> Woman </label> </div> 

Answer 2

You can use global variable to save the value of the radio button that has been selected

Try this:

var selectedGender;
function executeFilter(input) {
    // do filter
}
$(document).ready(function(){
    $('input.option_gender').click(function(){
        selectedGender = (this).attr('value'));
        executeFilter(selectedGender);
    });
});

You should give to each input a class name , id just match the first element!

Example:

<label class="btn btn-secondary active">
    <input type="radio" name="option" class="option_gender" autocomplete="off" value="All" checked=""> Unisex
</label>

Answer 3

 //get NOD-object of clicking element var button = document.getElementById('get_gender'); //method .onclick is prefer becouse not so much load the browser like EventListener button.onclick = function(e) { e.preventDefault();//this line stop send data to server console.log('hi');//this is work:) we check it } 

 <!--Replase name and id, becouse id is an unique name and proporty 'name' groupe radio-buttons --> <div class="btn-group-vertical btn-group-toggle pl-2" data-toggle="buttons"> <label class="btn btn-secondary active"> <input type="radio" id="option_all" name="option_gender" autocomplete="off" value="All" checked=""> Unisex </label> <label class="btn btn-secondary"> <input type="radio" id="option_man" name="option_gender" autocomplete="off" value="Male"> Man </label> <label class="btn btn-secondary"> <input type="radio" id="option_woman" name="option_gender" autocomplete="off" value="Female"> Woman </label> <button id="get_gender">Click</button> </div> 

Answer 4

What I prefer to do in cases like this is to delegate an event to the parent container:

 const select = document.getElementById('gender-selection'); select.addEventListener('click', ({ target }) => { // handler fires on root container click if (target.getAttribute('name') === 'option_gender') { // check if user clicks right element alert('Filter by: ' + target.value); } }); 

 <div class="btn-group-vertical btn-group-toggle pl-2" id="gender-selection" data-toggle="buttons"> <label for="option_gender-unisex">Unisex</label> <input type="radio" name="option_gender" id="option_gender-unisex" value="All" checked=""> <label for="option_gender-man">Man</label> <input type="radio" name="option_gender" id="option_gender-man" value="Male"> <label for="option_gender-woman">Woman</label> <input type="radio" name="option_gender" id="option_gender-woman" autocomplete="off" value="Female"> </div> 

As a sidenote you don't want to use same id's for different elements, on the other hand if you want your radio group allowing to select only one value — use same name attribute. Also autocomplete attribute is redundant for inputs of radio type. It won't do anything.

UPD: removed unnecessary loop from the handler.

Answer 5

Supposing you edit your radios so all of them have the same name, you assign a function to their check event so it only triggers when you change the input value.

$(document).on("check", "[name='option_gender']", function (){
    filterFunction($(this).val());
});