jquery - I have to change the background of div of previously checked radio buttons? But i am getting problems -

i getting problem in changing css of div of checked radio buttons. jquery code on load page:

var check = jquery('input:radio').is(':checked');   if (check == true) {     //jquery('input:radio').closest('.swatch').find('div.new').removeclass('new');     jquery('.swatch-element').addclass('new'); } else {     jquery('.swatch-element').removeclass('new'); } 

my list structure:

<div data-option-index="0" class="swatch clearfix swatch-0">     <div class="header">weight</div>         <div class="swatch-element 1-pound available new" data-value="1 pound">             <input type="radio" checked="" value="1 pound" name="option-0" id="swatch-0-1-pound">             <label for="swatch-0-1-pound">                 1 pound                 <img src="//cdn.shopify.com/s/files/1/1313/8977/t/3/assets/soldout.png?10509341804900951712" class="crossed-out">             </label>         </div>         <script>             jquery('.swatch[data-option-index="0"] .1-pound').removeclass('soldout').addclass('available').find(':radio').removeattr('disabled');         </script>         <script>             jquery('.swatch[data-option-index="0"] .1-pound').removeclass('soldout').addclass('available').find(':radio').removeattr('disabled');         </script>          <div class="swatch-element 2-pounds available new" data-value="2 pounds">             <input type="radio" value="2 pounds" name="option-0" id="swatch-0-2-pounds">             <label for="swatch-0-2-pounds">                 2 pounds                 <img src="//cdn.shopify.com/s/files/1/1313/8977/t/3/assets/soldout.png?10509341804900951712" class="crossed-out">             </label>         </div>         <script>             jquery('.swatch[data-option-index="0"] .2-pounds').removeclass('soldout').addclass('available').find(':radio').removeattr('disabled');         </script>         <script>             jquery('.swatch[data-option-index="0"] .2-pounds').removeclass('soldout').addclass('available').find(':radio').removeattr('disabled');         </script>     </div> 

i don't know how check each element?i getting confused in structure , selector of jquery.

if understand want :

$("input:radio").each(function() {  if($(this).is(':checked')) {       $('.swatch-element').addclass('new');  }  else {      $('.swatch-element').removeclass('new');  } }); 

is ok?

you can use <script> several javascript lines.