form submitting twice php

1Step 1: write a class name in the form tag Exp: "from-prevent-multiple-submits"
2 <form class="pt-4 from-prevent-multiple-submits" action="{{ route('messages.store') }}" method="POST">
3 @csrf
4  
5Step 2:
6Write a class in button section
7<button type="submit" id="submit" class="btn btn-primary from-prevent-multiple-submits">{{ translate('Send') }}</button>
8  
9Step 3:
10write this script code
11
12    <script type="text/javascript">
13    (function(){
14    $('.from-prevent-multiple-submits').on('submit', function(){
15        $('.from-prevent-multiple-submits').attr('disabled','true');
16    })
17    })();
18    </script>
19
20 

1Step 1: write a class name in the form tag Exp: "from-prevent-multiple-submits"
2 <form class="pt-4 from-prevent-multiple-submits" action="{{ route('messages.store') }}" method="POST">
3 @csrf
4  
5Step 2:
6Write a class in button section
7<button type="submit" id="submit" class="btn btn-primary from-prevent-multiple-submits">{{ translate('Send') }}</button>
8  
9Step 3:
10write this script code
11
12    <script type="text/javascript">
13    (function(){
14    $('.from-prevent-multiple-submits').on('submit', function(){
15        $('.from-prevent-multiple-submits').attr('disabled','true');
16    })
17    })();
18    </script>
19
20