在JavaScript中加载页面后如何显示div？

Question

Hi I have a Laravel Blade template where I built a search function and I want to load a div after the page has reloaded, when I submit the form. Otherwise when the page loads with the results, the results don't show. I want the Javascript to execute while on the page (hide the div), and then when the page refreshes then the div must become visible.

My HTML form is:

<form action="" class="search-form" method="GET" onsubmit="showDiv();">
    <input type="text" name="location" placeholder="Search" required>
    <button class="search-btn" type="submit"><i class="flaticon-026-search"></i></button>
  </form>

And the div I want to show after page load is:

<div id="hideDiv" style="display:none">
  @foreach($locations as $location)
    @foreach($location->landmark as $landmark)
       <p>{{$landmark->name}}</p>
    @endforeach
  @endforeach
</div>

My JavaScript:

function showDiv() {
   var div = document.getElementById("hideDiv");
   if (div.style.display == 'none') {
     div.style.display = '';
   }
   else {
     div.style.display = 'block';
   }
 }

Answer 1

Write window.onload = showDiv; before your function

Answer 2

If you have only one submit button on same page than you can use like bellow (not tested, just try to suggest)

@if (Request::isMethod('post'))
 <div id="hideDiv" style="display:none">
   @foreach($locations as $location)
     @foreach($location->landmark as $landmark)
       <p>{{$landmark->name}}</p>
    @endforeach
   @endforeach
 </div>
@endif

PS: try to identify ispostback event in Page or Javascript which one is preferable.