Using dynamic slots and dynamic components

 Dynamic slots and dynamic components are advanced features in frameworks like Vue.js and React, allowing you to create highly flexible and reusable components. Here's an overview of how to use dynamic slots and components in Vue.js:


**Dynamic Slots in Vue.js:**


In Vue.js, dynamic slots allow you to create components that can accept a variable number of slot elements. You can use the `<slot>` element with a `name` attribute to define dynamic slots and pass content into them from the parent component. Here's a basic example:


```vue

<!-- ParentComponent.vue -->

<template>

  <div>

    <child-component>

      <template v-slot:header>

        <h1>Dynamic Header</h1>

      </template>

      <template v-slot:content>

        <p>Dynamic Content</p>

      </template>

    </child-component>

  </div>

</template>


<!-- ChildComponent.vue -->

<template>

  <div>

    <slot name="header"></slot>

    <slot name="content"></slot>

  </div>

</template>

```


In this example, the parent component (`ParentComponent.vue`) provides dynamic content for the "header" and "content" slots of the child component (`ChildComponent.vue`). You can pass different content into these slots as needed.


**Dynamic Components in Vue.js:**


Dynamic components in Vue.js allow you to conditionally render components based on a property or condition. You can use the `component` element and bind it to a component name. Here's an example:


```vue

<!-- ParentComponent.vue -->

<template>

  <div>

    <button @click="loadComponent('ComponentA')">Load Component A</button>

    <button @click="loadComponent('ComponentB')">Load Component B</button>

    <component :is="currentComponent"></component>

  </div>

</template>


<script>

import ComponentA from './ComponentA.vue';

import ComponentB from './ComponentB.vue';


export default {

  data() {

    return {

      currentComponent: null

    };

  },

  methods: {

    loadComponent(componentName) {

      if (componentName === 'ComponentA') {

        this.currentComponent = ComponentA;

      } else if (componentName === 'ComponentB') {

        this.currentComponent = ComponentB;

      }

    }

  }

};

</script>

```


In this example, you have a parent component that dynamically renders `ComponentA` or `ComponentB` based on a button click. The `component` element's `:is` attribute is bound to the `currentComponent` data property.


**Dynamic Slots and Components in React:**


In React, dynamic slots and components can be achieved by passing functions as props to child components and rendering components conditionally. Here's a simplified example:


```jsx

// ParentComponent.js

import React, { useState } from 'react';

import ChildComponent from './ChildComponent';


function ParentComponent() {

  const [showHeader, setShowHeader] = useState(true);

  

  const headerContent = showHeader ? <h1>Dynamic Header</h1> : null;

  

  return (

    <div>

      <button onClick={() => setShowHeader(!showHeader)}>

        Toggle Header

      </button>

      <ChildComponent header={headerContent} />

    </div>

  );

}


export default ParentComponent;

```


In this React example, the `header` prop is conditionally passed to the `ChildComponent`. By toggling the `showHeader` state, you can dynamically control whether the header is displayed.


For dynamic components in React, you can conditionally render components based on state or props, similar to the Vue.js example.

Comments

Post a Comment

Popular posts from this blog

bad character U+002D '-' in my helm template

 In Helm templates, the hyphen character (`-`) can sometimes be treated as a reserved character, particularly when defining values or labels. To include a hyphen character in a Helm template without issues, you can use one of the following approaches: 1. **Quoting the Hyphen:**    You can enclose the hyphen in double quotes, like this:    ```yaml    key: "-"    ```    This way, Helm will interpret the hyphen as a string rather than an operator. 2. **Using Backticks:**    If you need to use the hyphen within a Go template function or inside backticks, you can escape it with a backslash (`\`), like this:    ```yaml    value: `{{ .Values.someField | printf "%s \\-" }}`    ```    The backslash prevents Helm from interpreting the hyphen as a special character. 3. **Variable Assignment:**    Assign the value to a variable and use it. For example:    ```yaml    {{- $hyphen := "-" }}    key: {{ $hyphen }}    ```    This way, you can use the variable `$hyphen` wher
Read more

GitLab pipeline stopped working with invalid yaml error

 When your GitLab pipeline has stopped working with an "invalid YAML" error, it means there's a problem with your `.gitlab-ci.yml` file. This could be due to syntax errors, incorrect indentation, or other issues in your pipeline configuration. Here's how to troubleshoot and resolve this issue: 1. **Check for Syntax Errors**:    Carefully review your `.gitlab-ci.yml` file for any syntax errors. Common issues include missing colons, indentation problems, or mismatched quotation marks. Use a YAML linter or an online YAML validator to identify and correct syntax errors. 2. **Indentation**:    YAML relies heavily on proper indentation. Make sure that all lines within the same block have consistent indentation (typically using spaces, not tabs). Incorrect indentation can cause YAML parsing errors. 3. **Dashes and Lists**:    Ensure that you use the correct syntax for lists (arrays) in YAML by starting each item with a dash (`-`). Be consistent with your use of dashes throug
Read more

How do I add a printer in OpenSUSE which is being shared by a CUPS print server?

 To add a printer in openSUSE that is being shared by a CUPS print server, you can use the following steps: 1. **Ensure CUPS Client is Installed:**    Make sure your openSUSE system has the CUPS client tools installed. You can install them using the following command:    ```bash    sudo zypper install cups-client    ``` 2. **Discover Available Printers:**    Use the `lpinfo` command to discover available printers on your CUPS print server. Replace `cups-server-hostname` with the hostname or IP address of your CUPS server:    ```bash    lpinfo -v -h cups-server-hostname:631    ```    This command should list the printers shared by the CUPS server. 3. **Add a Printer:**    Use the `lpadmin` command to add a printer. Replace `printer-name` with the name of the printer you want to add and `printer-uri` with the URI obtained from the `lpinfo` command:    ```bash    sudo lpadmin -p printer-name -E -v printer-uri    ```    For example:    ```bash    sudo lpadmin -p MyPrinter -E -v socket://cu
Read more