I tried install bootstrap 4, and included following links
<script src="libs/jquery/dist/jquery.min.js"></script>
<script src="libs/tether/dist/js/tether.min.js" ></script>
<script src="libs/popper.js/dist/popper.js"></script>
<script src="libs/bootstrap/dist/js/bootstrap.min.js" ></script>
But The following error occurs :
Uncaught syntaxError: Unexpected token export
Any ideas how to fix it?
To solve the "Uncaught SyntaxError Unexpected token 'export'", refactor your code to use the CommonJS syntax, e.g. module. exports = {num}; instead of export num = 10; . Copied!
js for positioning. Dropdowns are built on a third party library, Popper. js, which provides dynamic positioning and viewport detection. So these are the Bootstrap 4 components that need Popper.
You must include popper. min. js before bootstrap. js or use bootstrap.
Just got this too and figured why it really happens. In case others get by here:
Check the readme.md "Usage". The lib is available in three version for three difference module loaders. In short: if you load it with the <script>
tag then you must use the UMD version. You can find it in /dist/umd
. The default (in /dist
) is the ESNext (ECMA-Script) which can not be loaded using the script
tag.
Bootstrap 4 requires the UMD version of popper.js
, and make sure the order is as follows:
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="~/Scripts/jquery-3.0.0.min.js"></script>
<script src="~/Scripts/umd/popper.min.js"></script>
<script src="~/Scripts/bootstrap.min.js"></script>
I encountered the same issue if I use popper.js from CDN network like cdnjs
.
If you observe the source code of Bootstrap 4
examples like for example Navbar you can see that popper.min.js
is loaded from:
<script src="https://getbootstrap.com/docs/4.1/assets/js/vendor/popper.min.js"></script>
I included that in my project and the error is gone. You can download the source code from
https://getbootstrap.com/docs/4.1/assets/js/vendor/popper.min.js
and include in your project as a local file and it should work.
You can also add bootstrap.bundle.min.js and remove popper.js in your html.
Bundled JS files (bootstrap.bundle.js
and minified bootstrap.bundle.min.js
) include [Popper](https://popper.js.org/), but not jQuery.
Line 96 in README
Popper.js is currently shipped with 3 targets in mind: UMD, ESM and ESNext.
dist/
, can be used with webpack and babel-preset-env
;Make sure to use the right one for your needs. If you want to import it with a <script>
tag, use UMD.
You have following code in Bundle Config bundles.Add(new ScriptBundle("~/bundles/jquery").Include( "~/Scripts/jquery-{version}.js"));
bundles.Add(new ScriptBundle("~/bundles/jqueryval").Include(
"~/Scripts/jquery.validate*"));
// Use the development version of Modernizr to develop with and learn from. Then, when you're
// ready for production, use the build tool at https://modernizr.com to pick only the tests you need.
bundles.Add(new ScriptBundle("~/bundles/modernizr").Include(
"~/Scripts/modernizr-*"));
bundles.Add(new ScriptBundle("~/bundles/bootstrap").Include(
"~/Scripts/umd/popper.min.js",
"~/Scripts/bootstrap.js",
"~/Scripts/respond.js"));
following code in layout html
@Scripts.Render("~/bundles/jquery")
@Scripts.Render("~/bundles/bootstrap")
This worked for me
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