Get the total number of rows in the detailed table and assign it to the main table field

<script>
jQuery(document).ready(function(){
    
    

  checkCustomize=function (){
    
    //提交函数 

           var indexnum0=jQuery("#indexnum0").val();//行数 
alert( indexnum0);

    jQuery("#field8819").val(indexnum0);//主表的值
          return true;

  };

       
});

</script>

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