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Prevent form from submitting with certain buttons HTML/JS

I am working on a school website, where you can make an assignment. I have a submit button, which is the one that should redirect. I also have some other buttons within this form which are not submit buttons. The problem is, When i click those buttons that i don't want to redirect, it still redirects. What i thought i should do is:
form.addEventListener("submit", (e) =>{
e.preventDefault();
}
But have realised that that would stop me from submitting at all.
I am not sure what to do.
I have tried event.preventDefault for each button, but that doesn seem to work either.
How do i fix this please help I need answers pronto!

The HTML buttons can be of three types:
button The button is a clickable button
submit The button is a submit button (submits form-data)
reset The button is a reset button (resets the form-data to its initial values)
You might want to try setting the type of the button to clickable and have just the one submit button.
Hopefully that helps you.
Reference:
https://www.w3schools.com/tags/att_button_type.asp

You can set the button type to 'button' instead of 'submit', but if you insist on using submit you can also use this function to prevent the page from reloading after submitting the form.
<form onsubmit="handleSubmit()">
Type Something: <input type="text" name="example">
<input type="submit" value="Submit">
</form>
<script>
function handleSubmit(e) {
e.preventDefault();
}
</script>

JQuery Modal Trigger for Unique Elements

Let's say I have a collection containing 3 elements.
Each element has a corresponding remove button that I would like to initiate a POST to my server. Right now I have it setup so that when "Remove" button is pressed, a confirmation modal pops up with "yes" and "no" buttons. I am using the same modal for each element.
Problem is, when I click "yes" in modal, how can I have it know which remove button I clicked that launched the modal?
Here is a link to a gist containing the problematic code
https://gist.github.com/anonymous/85481507a1171467cae5
I have tried using a suggestion below that implements the following:
$('#hingle_dingle_0').on('click', function(e){
$('#confirmRemoveNetwork').modal('toggle', $(this));
});
$('#confirmRemoveNetwork').on('show.bs.modal', function (event) {
var button = $(event.relatedTarget) // Button that triggered the modal
console.log(button);
});
However this returns an empty set. I can't for goodness sake figure out why it doesn't find the event.
Thanks for any help!

The modal is autoposting because you are opening it with a <button> inside a form with an input. Unless you tell it not to, this will cause a form submit. Simply set the type to button (instead of submit which is default): <button type="button">
You can capture the calling button by tapping into the event thrown when the modal is opened:
$('#confirmRemoveNetwork').on('shown.bs.modal', function (e) {
console.log(e.relatedTarget.id);
});
Finally, be sure your IDs are unique. You cannot have both "remove network" buttons using the same id of removenetworkbtn.

Stop radio button from changing, show popup, then change radio button

What I am trying to do is to prevent the user from changing the radio button until they confirm that they want to leave the "page". The radio button should not change to the one they clicked until after they click on the button in the popup to say "ok leave page".
This call handles changing the page to the selected radio button, and everything else. This should only be fired if the button in the popup is clicked:
$("body").on("change", "input[type='radio'][name='quote-type']:checked", function(e){
//Change the radio button and everything else
});
This handles the popup and everything:
$(function(){
var LEAVEPAGE;
//Radio button changes, so show a popup
$("body").on("change", ".coverage-options-wrapper li:not(.custom) input[type='radio'][name='quote-type']", function(e){
e.preventDefault();
e.stopPropagation();
LEAVEPAGE = e.currentTarget;
//Show the popup to ask if you are sure you want to switch radio buttons
});
//Click the button in the popup to leave the page, so change the originally clicked radio button.
$("body").unbind("click").on("click", ".leave-page", function(){
$(LEAVEPAGE).prop("checked", true).trigger("change"); //triggers change for the first call to be run, to actually change the page
});
});
What is happening is the radio button is just being changed regardless, it shows the popup too, however it isn't waiting for a response from the popup. It just switches anyways. Also, when I click on the .leave-page button, it triggers change (it's suppose to be so that it will load the new page attributed to that button), however it ALSO triggers the popup again (as they both use the change event).
I am very stumped.

DEMO
JS
var optionTarget;
$(":radio").click(function(e){
e.preventDefault();
optionTarget = e.target;
$("#leave-dialog").show();
});
$("#leave-dialog button").click(function(){
$("#leave-dialog").hide();
});
$("#leave-btn").click(function(){
$(optionTarget).prop('checked', true);
});
HTML
<input type="radio" name="bleh" value="yes" checked>option 1
<input type="radio" name="bleh" value="no">option 2
<div id="leave-dialog">Are you sure?
<br/>
<button id="leave-btn">Yes</button>
<button>No</button>
</div>

test whether button being clicked before running function on element.blur()

I have a function called showHide() that alternately shows and hides a text input field and a button (button2) when another button (button1) is clicked. The text input field is automatically focused when it opens, and this works great.
The HTML looks roughly thus:
<button1>Show/Hide</button>
<form>
<input class="hidden" type="text" />
<button2 type="submit">Submit</button>
</form>
<script type="text/javascript">
$("button1.someSelectors").click(function() {showHide();});
$("input.someSelectors").blur(function() {showHide();})
</script>
I would like to extend the function such that when the input field loses focus it and button1 disappear, unless it loses focus because button1 is being clicked. As it reads now I'm only testing whether the input field has focus or not. How can I also check whether button2 is being clicked or not?
I tried:
$("input.someSelectors").blur(function() {
if (!$("button2.someSelectors").is(":focus")) {
showHide();
}
});
but it hid the form elements even when I tried clicking button2.
An alternative would be to test whether button2 is being clicked or not in the "hide" part of the function, but when I added
if(!$("button2.someSelectors").click()) {do the hide part of the function}
to showHide(), the form got submitted when I clicked button1 or button2. Here is an example of my problem. Can anyone help?
--Edit:
var showHide=function(item, category) {
if($("input."+item+"."+category).hasClass("hidden")) {
$("input."+item+"."+category).show("fast").focus().removeClass("hidden");
$("button.buy."+item+"."+category).show("fast");
$("button.purchase."+item+"."+category).text("Never mind!");
} else {
$("input."+item).hide("fast").addClass("hidden");
$("button.buy."+item).hide("fast");
$("button.purchase."+item).text("Purchase");
}
}

blur event on textbox is triggered before the click event fires on the button. In order to avoid that you can use mousedown event instead of click event which will be triggered before click event. Try this
$("button1.someSelectors").mousedown(function() {showHide();});
$("input.someSelectors").blur(function() {showHide();})

Why does jQuery "toggle" button trigger the Submit button on a form?

I have built a fairly complex form which includes a hidden section that the user can toggle open for entering more information if necessary. However, when you click on this toggle button labeled I have more Nativities, it triggers the submit button and prematurely submits the form.
The form is in dev right now, but it can be found here.
The code I am using for the toggle button is:
<script type="text/javascript">
$(function() {
$("#schedule").accordion({ header: "h5", collapsible: true });
$("#more-nativities").hide();
$("#toggle").click(function() {
$("#more-nativities").slideToggle("slow");
});
});
</script>
The code for the submit button is pretty basic:
<input id="submit2" type="image" src="_images/btn_register.jpg" name="submit" alt="" onmouseover="javascript:this.src='_images/btn_register2.jpg'" onmouseout="javascript:this.src='_images/btn_register.jpg'"/>
The code for the toggle button is:
<button id="toggle">I have more nativities</button>
Any ideas as to why the toggle button is triggering the submit? And more importantly how to solve the problem?
Thanks!

Try adding a type, i.e.:
<button type="button" id="#toggle">Text</button>
http://www.w3schools.com/tags/tag_button.asp says this should be always defined. It's possible the browser is defaulting to a submit button.

Esteban has one solution. A better one is described in the jQuery tutorial:
$(document).ready(function(){
$("a").click(function(event){
alert("As you can see, the link no longer took you to jquery.com");
event.preventDefault();
});
});

Try
return false;
after the slide toggle on the click function fro the toggle button.

From W3Schools:
Always specify the type attribute for
the button. The default type for
Internet Explorer is "button", while
in other browsers (and in the W3C
specification) it is "submit".
http://www.w3schools.com/tags/tag_button.asp
Be sure to specify type="button"