Bootstrap 4 Tutorial

Bootstrap 4 JavaScript Modal

Last modified on: October 27, 2024

<div class="flex-shrink-0 flex flex-col relative items-end">
<div>
<div class="pt-0">
<div class="gizmo-bot-avatar flex h-8 w-8 items-center justify-center overflow-hidden rounded-full">
<h2 class="relative p-1 rounded-sm flex items-center justify-center bg-token-main-surface-primary text-token-text-primary h-8 w-8">Bootstrap 4 JavaScript Modal</h2>
</div>
</div>
</div>
</div>
<div class="group/conversation-turn relative flex w-full min-w-0 flex-col agent-turn">
<div class="flex-col gap-1 md:gap-3">
<div class="flex max-w-full flex-col flex-grow">
<div class="min-h-8 text-message flex w-full flex-col items-end gap-2 whitespace-normal break-words [.text-message+&amp;]:mt-5" dir="auto" data-message-author-role="assistant" data-message-id="250871d5-6db6-4b8e-9633-f02947ab95b9" data-message-model-slug="gpt-4o">
<div class="flex w-full flex-col gap-1 empty:hidden first:pt-[3px]">
<div class="markdown prose w-full break-words dark:prose-invert light">
<p>The Bootstrap 4 Modal component is a versatile, interactive dialog box that overlays the screen, often used for alerts, confirmations, and custom content like forms or media. It provides a smooth, animated overlay with options for customization and control via JavaScript.</p>
<hr />
<h3>1. Basic Modal Example</h3>
<p>Here's a simple example of how to create and activate a modal:</p>
<div class="contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950">
<div class="flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary">html</div>
<div class="sticky top-9 md:top-[5.75rem]">
<div class="absolute bottom-0 right-2 flex h-9 items-center">
<div class="flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary">
<pre class="language-markup"><code>&lt;!-- Button to Open the Modal --&gt;
&lt;button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModal"&gt;
  Launch Modal
&lt;/button&gt;

&lt;!-- Modal Structure --&gt;
&lt;div class="modal fade" id="exampleModal" tabindex="-1" aria-labelledby="exampleModalLabel" aria-hidden="true"&gt;
  &lt;div class="modal-dialog"&gt;
    &lt;div class="modal-content"&gt;
      &lt;div class="modal-header"&gt;
        &lt;h5 class="modal-title" id="exampleModalLabel"&gt;Modal Title&lt;/h5&gt;
        &lt;button type="button" class="close" data-dismiss="modal" aria-label="Close"&gt;
          &lt;span aria-hidden="true"&gt;&amp;times;&lt;/span&gt;
        &lt;/button&gt;
      &lt;/div&gt;
      &lt;div class="modal-body"&gt;
        This is the content inside the modal.
      &lt;/div&gt;
      &lt;div class="modal-footer"&gt;
        &lt;button type="button" class="btn btn-secondary" data-dismiss="modal"&gt;Close&lt;/button&gt;
        &lt;button type="button" class="btn btn-primary"&gt;Save changes&lt;/button&gt;
      &lt;/div&gt;
    &lt;/div&gt;
  &lt;/div&gt;
&lt;/div&gt;
</code></pre>
</div>
</div>
</div>
</div>
<ul>
<li><strong>Explanation</strong>:
<ul>
<li><code>data-toggle="modal"</code> and <code>data-target="#exampleModal"</code>: Attach these to the button to open the modal.</li>
<li><code>.modal</code>: Main modal container.</li>
<li><code>.modal-dialog</code>: Centers the modal.</li>
<li><code>.modal-content</code>: Contains all modal elements like header, body, and footer.</li>
<li><code>.modal-header</code>, <code>.modal-body</code>, and <code>.modal-footer</code>: Define the sections within the modal.</li>
</ul>
</li>
</ul>
<hr />
<h3>2. Modal with Static Backdrop and Disabled Keyboard Close</h3>
<p>You can customize the modal behavior to prevent it from closing when the backdrop is clicked or when the "Escape" key is pressed.</p>
<div class="contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950">
<div class="flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary">html</div>
<div class="sticky top-9 md:top-[5.75rem]">
<div class="absolute bottom-0 right-2 flex h-9 items-center">
<div class="flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary">
<pre class="language-markup"><code>&lt;!-- Button to Open Static Modal --&gt;
&lt;button type="button" class="btn btn-warning" data-toggle="modal" data-target="#staticBackdrop"&gt;
  Open Static Modal
&lt;/button&gt;

&lt;!-- Modal Structure with Static Backdrop --&gt;
&lt;div class="modal fade" id="staticBackdrop" data-backdrop="static" data-keyboard="false" tabindex="-1" aria-labelledby="staticBackdropLabel" aria-hidden="true"&gt;
  &lt;div class="modal-dialog"&gt;
    &lt;div class="modal-content"&gt;
      &lt;div class="modal-header"&gt;
        &lt;h5 class="modal-title" id="staticBackdropLabel"&gt;Static Modal Title&lt;/h5&gt;
        &lt;button type="button" class="close" data-dismiss="modal" aria-label="Close"&gt;
          &lt;span aria-hidden="true"&gt;&amp;times;&lt;/span&gt;
        &lt;/button&gt;
      &lt;/div&gt;
      &lt;div class="modal-body"&gt;
        This modal cannot be closed by clicking outside or pressing "Escape."
      &lt;/div&gt;
      &lt;div class="modal-footer"&gt;
        &lt;button type="button" class="btn btn-secondary" data-dismiss="modal"&gt;Close&lt;/button&gt;
      &lt;/div&gt;
    &lt;/div&gt;
  &lt;/div&gt;
&lt;/div&gt;
</code></pre>
</div>
</div>
</div>
</div>
<ul>
<li><strong>Explanation</strong>:
<ul>
<li><code>data-backdrop="static"</code>: Prevents closing by clicking outside the modal.</li>
<li><code>data-keyboard="false"</code>: Disables closing with the "Escape" key.</li>
</ul>
</li>
</ul>
<hr />
<h3>3. JavaScript Control for Modals</h3>
<p>Bootstrap modals can be programmatically controlled using JavaScript methods like <code>.modal('show')</code>, <code>.modal('hide')</code>, and <code>.modal('toggle')</code>.</p>
<div class="contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950">
<div class="flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary">html</div>
<div class="sticky top-9 md:top-[5.75rem]">
<div class="absolute bottom-0 right-2 flex h-9 items-center">
<div class="flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary">
<pre class="language-markup"><code>&lt;!-- Button to Toggle Modal with JavaScript --&gt;
&lt;button onclick="showModal()" class="btn btn-info"&gt;Toggle Modal with JavaScript&lt;/button&gt;

&lt;!-- Modal Structure --&gt;
&lt;div class="modal fade" id="jsModal" tabindex="-1" aria-labelledby="jsModalLabel" aria-hidden="true"&gt;
  &lt;div class="modal-dialog"&gt;
    &lt;div class="modal-content"&gt;
      &lt;div class="modal-header"&gt;
        &lt;h5 class="modal-title" id="jsModalLabel"&gt;JavaScript Controlled Modal&lt;/h5&gt;
        &lt;button type="button" class="close" data-dismiss="modal" aria-label="Close"&gt;
          &lt;span aria-hidden="true"&gt;&amp;times;&lt;/span&gt;
        &lt;/button&gt;
      &lt;/div&gt;
      &lt;div class="modal-body"&gt;
        This modal can be opened and closed with JavaScript functions.
      &lt;/div&gt;
      &lt;div class="modal-footer"&gt;
        &lt;button type="button" class="btn btn-secondary" data-dismiss="modal"&gt;Close&lt;/button&gt;
      &lt;/div&gt;
    &lt;/div&gt;
  &lt;/div&gt;
&lt;/div&gt;

&lt;script&gt;
  function showModal() {
    $('#jsModal').modal('toggle'); // Toggles the modal
  }
&lt;/script&gt;
</code></pre>
</div>
</div>
</div>
</div>
<ul>
<li><strong>JavaScript Methods</strong>:
<ul>
<li><code>.modal('show')</code>: Opens the modal.</li>
<li><code>.modal('hide')</code>: Closes the modal.</li>
<li><code>.modal('toggle')</code>: Toggles between open and close.</li>
</ul>
</li>
</ul>
<hr />
<h3>&nbsp;</h3>
</div>
</div>
</div>
</div>
</div>
</div>

Web Technology View More