I'm trying to simply show a loading gif once the form is submitted. My code is not working correctly for the loading gif to show. You'll see my image for the gif is set to visibility: hidden
.
<script src="js/jquery-1.11.1.min.js"></script>
<div class="" style="width: 480px; margin: 0 auto; margin-top: 20px;" id="form_wrapper">
<img src="img/loader.gif" id="gif" style="display: block; margin: 0 auto; width: 100px; visibility: hidden;">
<div class="fade" id="form">
<form action="process_login.php" method="POST" name="simplelogin" id="login_form"><br />
<label for="username"> Username:</label>
<input type="username" name="username" id="username" size="30" required><br><br>
<label for="password"> Password:</label>
<input type="password" name="password" id="password" size="30" required><br><br>
<input class="load_button" type="submit" name="submit" id="submit" value="Submit" placeholder="Submit">
</form>
</div>
</div>
<div class="fifty"></div>
<script type="text/javascript">
$('.load_button').submit(function() {
$('#gif').show();
return true;
});
</script>
The show()
method only affects the display
CSS setting. If you want to set the visibility you need to do it directly. Also, the .load_button
element is a button and does not raise a submit
event. You would need to change your selector to the form
for that to work:
$('#login_form').submit(function() {
$('#gif').css('visibility', 'visible');
});
Also note that return true;
is redundant in your logic, so it can be removed.
Button inputs don't have a submit event. Try attaching the event handler to the form instead:
<script type="text/javascript">
$('#login_form').submit(function() {
$('#gif').show();
return true;
});
</script>
Better and clean example using JS only
Reference: TheDeveloperBlog.com
Step 1 - Create your java script and place it in your HTML page.
<script type="text/javascript">
function ShowLoading(e) {
var div = document.createElement('div');
var img = document.createElement('img');
img.src = 'loading_bar.GIF';
div.innerHTML = "Loading...<br />";
div.style.cssText = 'position: fixed; top: 5%; left: 40%; z-index: 5000; width: 422px; text-align: center; background: #EDDBB0; border: 1px solid #000';
div.appendChild(img);
document.body.appendChild(div);
return true;
// These 2 lines cancel form submission, so only use if needed.
//window.event.cancelBubble = true;
//e.stopPropagation();
}
</script>
in your form call the java script function on submit event.
<form runat="server" onsubmit="ShowLoading()">
</form>
Soon after you submit the form, it will show you the loading image.
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