我点击一个输入收音机并通过再次点击更改图像src ...如何更改图像的样式？

Question

I have this code:

https://jsfiddle.net/Suiberu/rxu8wgxf/

//INPUT RADIO ON & OFF 
var prv;
var markIt = function(e) {
  if (prv === this && this.checked) {
    this.checked = false;
    prv = null;
  } else {
    prv = this;
  }
};

$(function() {
  $('input.limit_radio').on('click', markIt);
});


//CHANGE IMAGE
function changeImage(imgName) {
     image = document.getElementById('theimage');
     image.src = imgName;
}

Clicking on an input type radio.. and yes it has to be an input type radio, I do manage to change an img src. Thanks to some jquery code I can manage to turn off the input radio. But the changed image remains as it was changed in the first place. So when I turn off the input type radio I would like to get back the original img src. How do I achieve this?

Sorry, but javascript or jquery are not my strongest skills, but you can verify what am I asking for just checking the url above.

Thanks!

Answer 1

I removed the onclick handler and added a data attribute to swap out the urls.

https://jsfiddle.net/jjwilly16/37yn9xzy/1/ .

<img src="http://www.cbc.ca/i/img/theme/default/plus-up.png" name="theimage" id="theimage" data-alternate="https://www.ucl.ac.uk/2034/images/icons/arrow-blue-left.png"/>

/INPUT RADIO ON & OFF 
var prv;
var markIt = function(e) {
    if (prv === this && this.checked) {
    this.checked = false;
    prv = null;
  } else {
    prv = this;
  }
    var img = document.getElementById('theimage'),
        alternate = img.getAttribute('data-alternate'),
      src = img.src;
  img.src = alternate;
  img.setAttribute('data-alternate', src);

};

$(function() {
  $('input.limit_radio').on('click', markIt);
});

Answer 2

You can use mouseup event, remove and replace the original <input type="radio"> element.

 $(function() { var sources = ["https://www.ucl.ac.uk/2034/images/icons/arrow-blue-left.png" , "http://www.cbc.ca/i/img/theme/default/plus-up.png"]; var img = $("#theimage"); var clicked = false; function changeImage(e) { img.attr("src", function() { var checked = e.target.checked; if (!clicked || checked) { var clone = e.target.outerHTML; $(e.target).remove(); $(clone).insertAfter($("#theimage + br")); $(".limit_radio").prop("checked", !clicked ? true : !checked); } return (!clicked ? (clicked = true) : !checked) ? sources[0] : sources[1] }); } $(document).on("mouseup", "input.limit_radio", changeImage) }); 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"> </script> <img src="http://www.cbc.ca/i/img/theme/default/plus-up.png" name="theimage" id="theimage" /> <br> <input class="limit_radio" type="radio" name="edit_race" value="gnomin" id="race_gnomin"> 

jsfiddle https://jsfiddle.net/rxu8wgxf/5/