Function in JS and querySelector

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Good afternoon guys, I was playing with js today, follow my code line:

index.html 

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <script src="script.js" defer></script>
</head>
<body>
    <input type="password" name="" id="senha1">
    <input type="password" name="" id="senha2">
    <button id="btn">verificar senha</button>
</body>
</html>

script js.

function validarSenha(){
    if (senha1.value == "" || senha2.value == ""){
        alert('você esqueceu uma das senhas')
    } else if (senha1.value == senha2.value){
        alert('as senhas são iguais');
    } else {
        alert('as senhas são diferentes');
    }
}

btn.onclick = validarSenha;
I know you guys can say you’re missing the following lines:

senha1 = document.querySelector(#senha1) senha2 = document.querySelector(#senha2) btn = document.querySelector(#btn),

But when I opened the index.html my job validarSenha worked as expected, and I was curious, because I would have to give as Undefined these variables correct ? or not, I thank you in advance for understanding with my laygirl

javascript
  • 1

    Hi Raphael! Your question is good, and common. I gave an answer on another question, take a look at the one I marked as duplicate.

  • 1

    thanks @Sergio gave a bug but you clareou kkkkk worth u

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