Use jquery to change the color of button according to the value obtained in each loop - Codes Helper

Use jquery to change the color of button according to the value obtained in each loop
     <volist name="list" id="v" key="k">
            <div class="shdz_list">             
                <div class="shdz_top">
                {$v.name}
                <span>{$v.phone}</span>
                 <!-- style=" background: -sharpf17f17; border:1px solid -sharpf17f17; color: -sharpfff;" -->
                <!-- <button class="ischeck" val="{$v["id"]}">{$v.status}</button> -->
                <button class="ischeck" val="{$v["id"]}">{$v.status}</button>
                </div>
                <div class="shdz_w">{$v.province}  {$v.city}  {$v.area}  {$v.address}</div>
                <div class="shdz_bottom">
                <!-- <input id="{$v.ifdefault}" type="radio" name="item" value="" checked="checked">
                    <label for="1"></label> -->
                    
                        <a href="{:U("editaddress",array("id"=>$v["id"]))}" style=" background:url(/Public/images/bj_1.png) no-repeat center left;background-size:18px; margin-right: 3%;"></a>
                        <a class="dellink" val="{$v["id"]}"  href="javascript：;" style=" background:url(/Public/images/sc.png) no-repeat center left;background-size:18px; margin-left: 3%;"></a>
                    
                </div>
            </div>
            </volist>
            
            
            
            
$(function() {
 $(".ischeck").val();
 // console.log($(".ischeck").text());
       $(".ischeck").each(function(){   
         ass = $(".ischeck").text();
            if (val == ""){
                var $pat = $(this).parent();
                $pat.css("background","blue")
            }else if(val ==""){
                var $pat = $(this).parent();
                $pat.css("background","-sharpf3f3f3")
            }
            console.log(val);
            // alert(ass);
                     // });

   });