layer. Open processing method when the passed value is an array or the value is too long

var data  = [{
    "name":"160A100A1638.jpg","url":"/public/uploads/160A100A1638.jpg"}];


layer.open({
    
   title: " Subpage ",
   type: 2,
   content: "/admin/sysconfig/terminal_qrcodelist",
   area: ['50%', '70%'],
   btn: [" One click download ",' close '],
   success: function (layero, index) {
        // Successfully loaded changefile.html when , Preload , Pass the value from the parent window to   child window 
       
       let body = layer.getChildFrame('body', index);	// Without this, you can't pass values from the parent page to the child page 
       
       // Get the elements of the sub page , Render the data 
       // body.find(".filename").val(data[0].name); // adopt class Name to get data 
       // body.find(".filepath").val(data[0].url);// It means that rowselect[0].path This value is passed to the child window class="filepath" In this text box ,（ Preload ）
		
	   // Preload some sub page content 
       var html = '';
       data.forEach(function(value, key, data) {
    
           html += '<div class="big_box"><div class="img_box"><img src="'+ value.url +'" style="width:100%;" ></div>'+
               '<div class="btn_box"><a href="'+ value.url +'" download="'+ value.name +'" class="btn layui-btn-normal radius"> download </a></div></div>';
           //console.log(value.url);
           
       });

       body.find("#qr_list").html('');
       body.find("#qr_list").html(html);

       // layui.form.render();
   },


   yes: function (index, layero) {
      // When the OK button of the pop-up layer is pressed , This is to get the child window in the parent window form All values in the tag , And according to name Names and values form key value pairs json object 
       
       // Loop Download all qrcode
       $.each(data, function (i ,item){
    
           let a = document.createElement('a') //  establish a label 
           let e = document.createEvent('MouseEvents') //  Create a mouse event object 
           e.initEvent('click', false, false) //  Initialize event object 
           a.href = item.url //  Set download address 
           a.download = item.name //  Set the download file name 
           a.dispatchEvent(e)
       });
   },

   btn2: function (index, layero) {
    
       //layer.close(index);
       location.reload();
   }
});