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问题:

I'm new on VueJS ans Webpack. I've created a project with VueJS CLI and trying to work with it. I need to insert an CDN to my code.

When working with standard HTML, CSS & JS solutions, I'd include CDNs like this:

<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8" />
    <title>False Merge</title>

    <!-- CDN -->
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css">
    <link rel="stylesheet" type="text/css" href="https://cdn.datatables.net/v/dt/dt-1.10.16/sl-1.2.5/datatables.min.css"/>

    <!-- StyleSheets -->
    <link rel="stylesheet" href="public/stylesheets/index.css" />
</head>

<body>


    <script src="https://code.jquery.com/jquery-3.3.1.js" integrity="sha256-2Kok7MbOyxpgUVvAk/HJ2jigOSYS2auK4Pfzbm7uH60=" crossorigin="anonymous"></script>
    <script type="text/javascript" src="https://cdn.datatables.net/v/dt/dt-1.10.16/sl-1.2.5/datatables.min.js"></script>

    <script src="public/javascripts/index.js"></script>

</body>

</html>

As you can see, you can add a CDN script with the HTML script tag, and start using it in the JS.

I'm trying to do the same with VueJS in a component. I've got the template and style sections ready.

Unfortunately, I don't know how to add in a simple way a CDN to use inmediately in the script tag within the Vue component. I tried to do this but it is not working.

<template>
  <div class="index">
    <div class="container">
      <table id="table_dataset" class="display">
      </table>
    </div>
  </div>
  
</template>

<script type="text/javascript" src="https://cdn.datatables.net/v/dt/dt-1.10.16/sl-1.2.5/datatables.min.js"></script>
<script>
  export default {
    name: 'Index',
    data() {
      return { 
      }
    }
  }
</script>

<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>
</style>

Is there a way to add a CDN (without Webpack or NPM) to a VueJS component?

回答1:

Unfortunately, no, you can't add a <script> tag to a specific component via template.

In your case you have some options:

1: Use NPM

Propertly install the dependency using npm

Pros: proper usage of NPM and Webpack; scoped definition;
Cons: the script must be available as a NPM package.
Note: when available this is the recommended approach.

Steps:

For your case, you can check in datatables official page they do have a NPM package. I could be used like:
```
npm install --save datatables.net-dt
```

And in your .vue file:

<script>
  require( 'datatables.net-dt' )();
  export default {
    name: 'Index',
    data() {
      return { 
      }
    }
  }
</script>

2: Add `<script>` tag to `index.html`

Locate and a dd the <script> tag to your index.html

Pros: the <script> tag is clearly (and declaratively) added to the HTML source. The script will only be loaded once.
Cons: the script will be globally loaded.
Steps:
- Just add the <script type="text/javascript" src="https://cdn.datatables.net/v/dt/dt-1.10.16/sl-1.2.5/datatables.min.js"></script> to the end of the index.html file, preferably right before </body>.

3: Create the `<script>` tag programatically

The other alternative is to create the script tag programatically at the component, when the component is lodaded.

Pros: the code stays in the component only. Your external script will be loaded only when the component is loaded.
Cons: the script still will be globally available once it is loaded.

Steps/Code:

<script>
  export default {
    name: 'Index',
    data() {
      return { 
      }
    },
    mounted() {
      if (document.getElementById('my-datatable')) return; // was already loaded
      var scriptTag = document.createElement("script");
      scriptTag.src = "https://cdn.datatables.net/v/dt/dt-1.10.16/sl-1.2.5/datatables.min.js";
      scriptTag.id = "my-datatable";
      document.getElementsByTagName('head')[0].appendChild(scriptTag);
    }
  }
</script>

回答2:

Another option is to add the script inside index.html with v-if directive

<script v-if="loadGoogleAPI" async defer src="https://apis.google.com/js/api.js" ... ></script>

Inside the component file (.vue), if you want the script to be loaded set the flag to true:

<script>
export default {
  ...
  loadGoogleAPI: true,
  data() {
  ...
  }
};
</script>

How to include a CDN to VueJS CLI without NPM or W

问题:

回答1:

1: Use NPM

2: Add `<script>` tag to `index.html`

3: Create the `<script>` tag programatically

回答2:

收藏的人(0)

How to include a CDN to VueJS CLI without NPM or W

问题:

回答1:

1: Use NPM

2: Add <script> tag to index.html

3: Create the <script> tag programatically

回答2:

收藏的人(0)

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2: Add `<script>` tag to `index.html`

3: Create the `<script>` tag programatically