I am trying to hash my password on the client-side before sending it to my server(Tomcat server), when I click on submit the form is getting submitted before updating the value of the password to hashcode how can I make sure That my form gets submitted after the script is executed? or is there a better way to go by this?
<html>
<head>
<title>TODO supply a title</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,
initial-scale=1.0">
</head>
<body>
<h1></h1>
<form method="post" onsubmit="encrypt(event);" action="login" >
<input type="text" name="user_id">
<input type="password" name="password" id="pass">
<button id="but1" type="submit">submit</button>
</form>
<script>
function encrypt(event){
// event.preventDefault();//prevents from form getting auto submitted
document.querySelector("body").style.color="red";
sha512(document.getElementById("pass").value).then((x)=>
{
document.getElementById("pass").value=x;
document.querySelector("h1").innerHTML = x;
});
}
function sha512(str) {
return crypto.subtle.digest("SHA-512", new TextEncoder("utf-
8").encode(str)).then(buf => {
return Array.prototype.map.call(new Uint8Array(buf), x=>
(('00'+x.toString(16)).slice(-2))).join('');
});
}
sha512("my string for hashing").then(x => console.log(x));
</script>
</body>
</html>
Submit your form after the process
<form id="form1" method="post" onsubmit="encrypt(event);" action="login" >
<input type="text" name="user_id">
<input type="password" name="password" id="pass">
<button id="but1" type="submit">submit</button>
</form>
function encrypt(event) {
event.preventDefault(); //prevents from form getting auto submitted
document.querySelector("body").style.color = "red";
sha512(document.getElementById("pass").value).then((x) => {
document.getElementById("pass").value = x;
document.querySelector("h1").innerHTML = x;
document.getElementById("form1").submit(); // submitting the form
});
}