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问题:

I'm triying to create a snackbar / toast version with Bootstrap 4. I start with this tutorial from w3schools.

Updated: I was triying to implement a custom snackbar or toast for Bootstrap 4 but, right now, it isn't necesary beacause BS4 include this option from version 4.2 as @Zim says.

回答1:

Bootstrap 4.2 now includes Toast notifications

Here's an example:

<div class="toast" role="alert" aria-live="assertive" aria-atomic="true">
  <div class="toast-header">
    <strong class="mr-auto">Title</strong>
    <small>5 mins ago</small>
    <button type="button" class="ml-2 mb-1 close" data-dismiss="toast" aria-label="Close">
      <span aria-hidden="true">&times;</span>
    </button>
  </div>
  <div class="toast-body">
    Content... this is a toast message.
  </div>
</div>

Demo

More Bootstrap Toast layout/position examples:

Stacked vertically: https://www.codeply.com/go/3ZvZa9b8Im
Side-by-side: https://www.codeply.com/go/GFMde2ritI
3x3 grid: https://www.codeply.com/go/lj8GTFjvuK

回答2:

I (emphasis = full disclosure) created a jQuery plugin for the toasts components to make them easier to use, the repo can be found here. The purpose was to be able to call the toasts on the fly through JavaScript.

Toast

$.toast({
  title: 'Toast',
  subtitle: '11 mins ago',
  content: 'Hello, world! This is a toast message.',
  type: 'info',
  delay: 5000
});

Snack

$.toast({
  title: 'A small bitesize snack, not a toast!',
  type: 'info',
  delay: 5000
});

Live Example

(function(b){b.toast=function(a,h,g,l,k){b("#toast-container").length||(b("body").prepend('<div id="toast-container" aria-live="polite" aria-atomic="true"></div>'),b("#toast-container").append('<div id="toast-wrapper"></div>'));var c="",d="",e="text-muted",f="",m="object"===typeof a?a.title||"":a||"Notice!";h="object"===typeof a?a.subtitle||"":h||"";g="object"===typeof a?a.content||"":g||"";k="object"===typeof a?a.delay||3E3:k||3E3;switch("object"===typeof a?a.type||"":l||"info"){case "info":c="bg-info";
f=e=d="text-white";break;case "success":c="bg-success";f=e=d="text-white";break;case "warning":case "warn":c="bg-warning";f=e=d="text-white";break;case "error":case "danger":c="bg-danger",f=e=d="text-white"}a='<div class="toast" role="alert" aria-live="assertive" aria-atomic="true" data-delay="'+k+'">'+('<div class="toast-header '+c+" "+d+'">')+('<strong class="mr-auto">'+m+"</strong>");a+='<small class="'+e+'">'+h+"</small>";a+='<button type="button" class="ml-2 mb-1 close" data-dismiss="toast" aria-label="Close">';
a+='<span aria-hidden="true" class="'+f+'">&times;</span>';a+="</button>";a+="</div>";""!==g&&(a+='<div class="toast-body">',a+=g,a+="</div>");a+="</div>";b("#toast-wrapper").append(a);b("#toast-wrapper .toast:last").toast("show")}})(jQuery);


const TYPES = ['info', 'warning', 'success', 'error'],
      TITLES = {
        'info': 'Notice!',
        'success': 'Awesome!',
        'warning': 'Watch Out!',
        'error': 'Doh!'
      },
      CONTENT = {
        'info': 'Hello, world! This is a toast message.',
        'success': 'The action has been completed.',
        'warning': 'It\'s all about to go wrong',
        'error': 'It all went wrong.'
      };

function show_random_toast()
{
  let type = TYPES[Math.floor(Math.random() * TYPES.length)],
      title = TITLES[type],
      content = CONTENT[type];

  $.toast({
    title: title,
    subtitle: '11 mins ago',
    content: content,
    type: type,
    delay: 5000
  });
}

function show_random_snack()
{
  let type = TYPES[Math.floor(Math.random() * TYPES.length)],
      content = CONTENT[type].replace('toast', 'snack');
      
  $.toast({
    title: content,
    type: type,
    delay: 5000
  });
}

#toast-container{position:sticky;z-index:1055;top:0}#toast-wrapper{position:absolute;top:0;right:0;margin:5px}#toast-container>#toast-wrapper>.toast{min-width:150px}#toast-container>#toast-wrapper>.toast>.toast-header strong{padding-right:20px}

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width">
    <title>repl.it</title>
        <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
  </head>
  <body>
      <button class="btn-block btn-primary" onclick="show_random_toast();">Show Random Toast</button>
      <br>
      <button class="btn-block btn-primary" onclick="show_random_snack();">Show Random Snack</button>

      <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js" integrity="sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1" crossorigin="anonymous"></script>
    <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM" crossorigin="anonymous"></script>

  </body>
</html>

回答3:

Summary:

Create a container grid (row, cols. etc.).
Place inside snackbar an html with text or use data-text attribute inside button trigger. For example:

<div class="snackbar bg-info px-3 py-3">Text to show without data-text</div>

<button type="button" class="btn btn-primary btn-lg" id="snackbar-trigger" data-text="Texto en data-text">Snackbar trigger</button>

Copy & paste CSS & JS in your HTML.
Customize snackbar position changing .snackbar top and right options. Default is top: 10%; and right: 1%;.
See snackbar on page load or button trigger.

You can check full code on this pen.

回答4:

Sometimes we need show a piece of information to the user as a popup, but I can't use the Bootstrap modal for that. So that time we need to create a Snackbar, or we can say that a Toast. Snackbar are often used as tooltips/popups to show a message at the bottom of the screen.

Generally Toast is a popup for showing a small information to the user, this is also using in the android application. We can customize our Toast layout according to our requirement. It will be show on the screen when you call it and It will disappear after few seconds, whatever you have set.

Create your HTML code for the Snackbar with id #snackbar, you can use Bootstrap classes for the responsive design just like that:

<div class="container">
<h2 class="text-danger">Cool Snackbar/Toast demo</h2>
<div id="snackbar">
    <div class="close"><i class="fas fa-times-circle"></i></div>
    <div class="col-sm-6 col-xs-6 col-md-6">
        <a hreflang="en-in" href="https://play.google.com/" target="_blank" >
            <img src="google-play-store.png" alt="Google Play Store">
        </a>
    </div>
    <div class="col-sm-6 col-xs-6 col-md-6 second">
        <a hreflang="en-in" href="http://youtube.com/" target="_blank" >
            <img src="youtube.png" alt="YouTube Link" >
        </a>
    </div>
    <div class="clearfix"></div>
</div>
</div>

Now, we will create style for #snackbar with show and hide class, use @-webkit-keyframes method for fade-in and fade-out.

#snackbar {
visibility: hidden;
background-color: #FFFFFF;
text-align: center;
border-radius: 5px;
padding: 16px;
position: fixed;
z-index: 1;
bottom: 30px;
width:80%;
bottom: 30px;
box-shadow: 0px 0px 30px 20px grey;
}

#snackbar .close {
float:right;
color:#FF0000;
z-index: 1;
opacity: 0.6;
margin-top: -23px;
margin-right: -23px;
}

#snackbar .second {
border-left: 1px solid #FF0000
}

#snackbar img {
width:200px;
}

#snackbar.show {
visibility: visible;
-webkit-animation: fadein 0.5s;
animation: fadein 0.5s;
}

#snackbar.hide {
-webkit-animation: fadeout 0.5s 2.5s;
animation: fadeout 0.5s 2.5s;
}

@-webkit-keyframes fadein {
from {bottom: 0; opacity: 0;} 
to {bottom: 30px; opacity: 1;}
}

@keyframes fadein {
from {bottom: 0; opacity: 0;}
to {bottom: 30px; opacity: 1;}
}

@-webkit-keyframes fadeout {
from {bottom: 30px; opacity: 1;} 
to {bottom: 0; opacity: 0;}
}

@keyframes fadeout {
from {bottom: 30px; opacity: 1;}
to {bottom: 0; opacity: 0;}
}

After all, create your JavaScript code for #snackbar to show and hide effect.

var x = document.getElementById("snackbar");
setTimeout(function () {
    x.className = "show";
}, 3000);
setTimeout(function () {
    x.className = x.className.replace("show", "hide");
}, 15000);
$("#snackbar .close").click(function () {
    x.className = x.className.replace("show", "hide");
});

Look at full example, click on this url https://www.legendblogs.com/blog/how-to-create-a-snackbar-or-toast-bootstrap/121762