Category: Vue

The ERR_OSSL_EVP_UNSUPPORTED error typically occurs when there’s a mismatch between the version of OpenSSL used by Node.js and the version required by a package or library.

To fix this error in a Vue.js project, we can try the following steps:

1. Update Node.js and npm

Make sure you are using the latest version of Node.js and npm. You can download and install them from the official Node.js website: https://nodejs.org.

2. Clear npm cache

Sometimes, the issue can be resolved by clearing the npm cache. Run the following command to clear the npm cache:

npm cache clean --force

3. Update packages

Update all dependencies in your project to their latest versions. Run the following command in your project directory:

npm update

4. Reinstall dependencies

Remove the node_modules directory and reinstall dependencies:

rm -rf node_modules
npm install

5. **Verify OpenSSL compatibility

Ensure that the version of OpenSSL used by Node.js is compatible with any native modules or packages you are using. You can check the version of OpenSSL used by Node.js by running:

node -p "process.versions.openssl"

If you’re using a package that requires a specific version of OpenSSL, make sure it matches with the version used by Node.js.

6. Check for package compatibility

Check if any of the packages or libraries used in your Vue.js project have compatibility issues with the version of Node.js or OpenSSL you’re using. Visit the GitHub repository or website of each package to see if there are any reported issues or updates related to OpenSSL compatibility.

7. Report the issue

If you’re still encountering the ERR_OSSL_EVP_UNSUPPORTED error after trying the above steps, consider reporting the issue to the maintainers of the affected package or library. They may be able to provide further assistance or release updates to address compatibility issues.

By following these steps, you should be able to resolve the ERR_OSSL_EVP_UNSUPPORTED error in your Vue.js project.

We can remove HTML tags from rendered text in Vue.js using a computed property or a method that utilizes regular expressions to strip the HTML tags.

We can do the following:

Using a Computed Property:

<template>
  <div>
    <p>{{ sanitizedText }}</p>
  </div>
</template>

<script>
export default {
  data() {
    return {
      rawText: '<p>This is <b>some</b> <i>HTML</i> <span>text</span>.</p>'
    };
  },
  computed: {
    sanitizedText() {
      return this.rawText.replace(/<[^>]+>/g, '');
    }
  }
};
</script>

In this example, we have a rawText data property containing HTML content.

We use a computed property called sanitizedText to generate a version of rawText with HTML tags removed using a regular expression /<[^>]+>/g.

Using a Method:

<template>
  <div>
    <p>{{ removeTags(rawText) }}</p>
  </div>
</template>

<script>
export default {
  data() {
    return {
      rawText: '<p>This is <b>some</b> <i>HTML</i> <span>text</span>.</p>'
    };
  },
  methods: {
    removeTags(text) {
      return text.replace(/<[^>]+>/g, '');
    }
  }
};
</script>

In this example, we define a method called removeTags that accepts a text string as input and returns the same text with HTML tags removed using the same regular expression.

Choose the approach that best fits our use case. Both methods will effectively remove HTML tags from rendered text in Vue.js.

To make asynchronous Axios calls with async/await in Vue.js, we can use the axios library along with async and await keywords in our Vue component methods. Here’s an example of how to do it:

First, ensure we have Axios installed in your project:

npm install axios

Then, in our Vue component:

<template>
  <div>
    <button @click="fetchData">Fetch Data</button>
    <div v-if="loading">Loading...</div>
    <div v-if="error">Error: {{ error }}</div>
    <div v-if="data">
      <ul>
        <li v-for="item in data" :key="item.id">{{ item.title }}</li>
      </ul>
    </div>
  </div>
</template>

<script>
import axios from 'axios';

export default {
  data() {
    return {
      data: null,
      loading: false,
      error: null
    };
  },
  methods: {
    async fetchData() {
      this.loading = true;
      try {
        const response = await axios.get('https://jsonplaceholder.typicode.com/posts');
        this.data = response.data;
      } catch (error) {
        this.error = error.message;
      }
      this.loading = false;
    }
  }
};
</script>

In this example we import Axios at the top of the script.

Then we define a method called fetchData, which is marked as async.

This method will make an asynchronous HTTP GET request using Axios.

Inside fetchData, we set loading to true to indicate that data is being fetched.

We use try and catch blocks to handle successful responses and errors respectively.

Inside the try block, we use await to asynchronously wait for the response from the Axios GET request.

Once the response is received, we store the response data in the data property.

If an error occurs during the request, it will be caught in the catch block, and we set the error property to the error message.

Finally, we set loading back to false after the request is completed.

Now, when we click the “Fetch Data” button, the fetchData method will be called, and data will be fetched asynchronously using Axios with async/await syntax.

To use breakpoints in a SCSS file with Vue.js and Vuetify, you can leverage Vuetify’s built-in breakpoint mixins.

Vuetify provides a set of SCSS mixins that correspond to its breakpoints.

These mixins allow you to conditionally apply styles based on the screen size.

Here’s an example of how you can use breakpoints in a SCSS file with Vue.js and Vuetify:

// Import Vuetify SCSS variables and mixins
@import '~vuetify/src/styles/styles.sass';

// Your custom SCSS styles
.my-component {
  background-color: red;

  // Apply styles only on screens smaller than the "md" breakpoint
  @include breakpoint(md-and-down) {
    background-color: blue;
  }

  // Apply styles only on screens larger than the "md" breakpoint
  @include breakpoint(md-and-up) {
    background-color: green;
  }

  // Apply styles only on screens between "sm" and "lg" breakpoints
  @include breakpoint(sm-and-up, lg-and-down) {
    background-color: yellow;
  }
}

In this example we import Vuetify’s SCSS variables and mixins.

We define a class .my-component and set its background color to red.

We use Vuetify’s breakpoint mixin to apply styles based on different breakpoints.

We can specify breakpoints using the predefined breakpoint names (e.g., md, lg) along with the specified conditions (-and-up, -and-down, -only).

Remember to make sure that you have Vuetify and its SCSS styles set up in your Vue.js project for this to work.

Additionally, ensure that your Vue components use SCSS rather than plain CSS by configuring your build setup to support SCSS preprocessing.

We can do this by installing the necessary dependencies (like sass-loader and node-sass) and configuring your webpack or Vue CLI setup accordingly.

Using Express.js with Handlebars as the templating engine alongside Vue.js can be achieved, but we need to keep in mind that Handlebars and Vue.js serve different purposes in the application architecture.

Handlebars is typically used on the server-side to render dynamic content before it’s sent to the client, while Vue.js operates on the client-side to handle dynamic updates and interactions once the page is loaded.

Here’s a basic approach to using Express.js with Handlebars for server-side rendering and Vue.js for client-side interactivity:

1. Set up our Express.js server with Handlebars as the view engine

Install necessary dependencies:

npm install express express-handlebars

Configure our Express server to use Handlebars:

const express = require("express");
const exphbs = require("express-handlebars");

const app = express();

// Configure Handlebars
app.engine("handlebars", exphbs());
app.set("view engine", "handlebars");

// Define routes
app.get("/", (req, res) => {
  res.render("index", {
    // Pass data to our Handlebars template if needed
  });
});

// Start the server
const PORT = process.env.PORT || 3000;
app.listen(PORT, () => {
  console.log(`Server is running on port ${PORT}`);
});

2. Create a Handlebars template

Create a Handlebars template (e.g., views/index.handlebars) where we include Vue.js and define an element to mount our Vue app:

<!doctype html>
<html>
  <head>
    <title>Vue.js with Handlebars</title>
  </head>
  <body>
    <div id="app">
      <!-- Vue.js components will be rendered here -->
    </div>
    <script src="https://cdn.jsdelivr.net/npm/vue@2"></script>
    <script src="/js/app.js"></script>
    <!-- Include our Vue app script -->
  </body>
</html>

3. Set up our Vue.js application

Create our Vue app script (e.g., public/js/app.js):

new Vue({
  el: "#app",
  data: {
    message: "Hello from Vue!",
  },
});

4. Start building our Vue components

We can now start building Vue components as usual. These components will be mounted on the element with the ID app within the Handlebars template.

With this setup, Express.js with Handlebars handles the initial server-side rendering, while Vue.js takes over the client-side interactivity after the page is loaded.