2   function handleFormSubmit(event) {
 
   4     let form_el = event.target;
 
   5     let val = form_el.querySelector('input[type=edit]').value;
 
   6     let matches = val.match(/^\s*([NWR])(\d+)\s*$/i);
 
   9       matches = val.match(/\/(relation|way|node)\/(\d+)\s*$/);
 
  13       alert('invalid input');
 
  17     form_el.querySelector('input[name=osmtype]').setAttribute('value', matches[1].charAt(0).toUpperCase());
 
  18     form_el.querySelector('input[name=osmid]').setAttribute('value', matches[2]);
 
  22 <div class="container" id="details-index-page">
 
  24     <div class="col-md-12">
 
  26       <h1>Show details for place</h1>
 
  28       <div class="search-form">
 
  29         <h4>Search by place id</h4>
 
  31         <form class="form-inline" action="details.html">
 
  33                  class="form-control form-control-sm"
 
  36                  placeholder="12345" />
 
  38                  class="btn btn-primary btn-sm"
 
  43       <div class="search-form">
 
  44         <h4>Search by OSM type and OSM id</h4>
 
  46         <form on:submit|preventDefault={handleFormSubmit}
 
  47               id="form-by-type-and-id"
 
  49               action="details.html">
 
  51                  class="form-control form-control-sm"
 
  52                  pattern="^[NWR][0-9]+$"
 
  53                  placeholder="N123 or W123 or R123" />
 
  54           <input type="hidden" name="osmtype" />
 
  55           <input type="hidden" name="osmid" />
 
  56           <input type="submit" class="btn btn-primary btn-sm" value="Show" />
 
  60       <div class="search-form">
 
  61         <h4>Search by openstreetmap.org URL</h4>
 
  63         <form on:submit|preventDefault={handleFormSubmit}
 
  66               action="details.html">
 
  68                  class="form-control form-control-sm"
 
  69                  pattern=".*openstreetmap.*"
 
  70                  placeholder="https://www.openstreetmap.org/relation/123" />
 
  71           <input type="hidden" name="osmtype" />
 
  72           <input type="hidden" name="osmid" />
 
  73           <input type="submit" class="btn btn-primary btn-sm" value="Show" />
 
  89   .search-form .form-control{