What is the best way to hide an anchor tag with JavaScript?

I have spent countless hours searching through tutorials in an attempt to make the anchor tag disappear and reappear for my Login form, but none have seemed to work for me. Even after copying and pasting various solutions, nothing has worked. Below is the code I am currently working with:

    <form>
        <input type="submit" name="btnadd" value="Login" onsubmit="hide()">
        <a style="color: red;" id="notfound">User not found!</a>
    </form>

</div>
<script>
    var hide = function() {
        var x = document.getElementById("notfound");
        if (x.style.display === "none") {
            x.style.display = "block";
        } else {
            x.style.display = "none";
        }
    }
</script>

I would greatly appreciate any assistance in getting this functionality to work correctly.

Answer №1

There are 2 issues that need to be addressed:

  1. When a form is submitted, the default action is to reload the current page, so it must be prevented.
  2. The onsubmit event should be added to the form element, not the button.

A working example is provided below.

Additionally, it is worth noting that using inline event handlers like onsubmit or onclick is considered outdated. It is recommended to use addEventListener for better handling of DOM events. More information can be found here.

Furthermore, in the code snippet provided, if you click the button again, you may notice that a link appears below. This is because anchor tags default to display inline and not block. To prevent this behavior, you can change it to display inline.

var hide = function() {
    var x = document.getElementById("notfound");
    if (x.style.display === "none") {
        x.style.display = "block";
    } else {
        x.style.display = "none";
    }
    return false;
}
<div>Login Page.</div>

<form onsubmit="return hide();">
  <input type="submit" name="btnadd" value="Login">
  <a style="color: red;" id="notfound">User not found!</a>
</form>

Answer №2

You were pretty much spot on, all you need for the styling is:

x.style.visibility = 'hidden'

So if your intention is to make it completely invisible, this code will do the trick.

Answer №3

If OnSubmit isn't working, try using onClick="myFunction();". To hide the element with id "notfound", you can use document.getElementById("notfound").style.visibility = "hidden";

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