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Thursday 18 January 2024

List down the template equivalents in render functions in Vuejs explain with example? 072

 List down the template equivalents in render functions in Vuejs explain with example?


Here's a table listing common template features and their equivalents in render functions:





Template Feature

Render Function Equivalent

Example

Mustache Syntax ({{}})

String interpolation

<h1>{this.title}</h1>

v-bind:attribute

options.attrs

<img :src="imageUrl" alt="My Image">

v-on:event

options.on

<button @click="handleClick">Click me</button>

v-if

Conditional rendering

{this.showMessage && <p>Message</p>}

v-for

Array iteration

<ul><li v-for="item in items" :key="item.id">{item.name}</li></ul>

v-model

Two-way binding

<input v-model="message">

v-slot

Slot content

<my-component v-slot:header="{ title }"><h1>{ title }</h1></my-component>

Additional Equivalents:

  • v-html: this.$createElement('div', { innerHTML: this.htmlContent })

  • v-text: this.$createElement('div', this.textContent)

  • v-show: Conditional rendering with this.$createElement and a conditional expression.

  • v-bind: Using options.props for passing data to child components.

  • v-model: Using options.props and options.on to create two-way binding.

Key Points:

  • JSX Syntax: While you can use this.$createElement, Vue.js supports JSX for cleaner syntax in render functions.

  • Virtual DOM: Render functions create virtual DOM elements, which Vue.js efficiently updates in the real DOM.

  • Code Flexibility: Render functions offer more control over rendering logic, useful for dynamic structures and complex scenarios.

  • Trade-offs: Consider readability and maintainability when choosing between templates and render functions.

Example:

Template:


Code snippet

<template>
  <h1>{{ title }}</h1>
  <ul v-if="showList">
    <li v-for="item in items" :key="item.id">{{ item.name }}</li>
  </ul>
</template>

Render function:


JavaScript

render() {
  return (
    <div>
      <h1>{this.title}</h1>
      {this.showList && (
        <ul>
          {this.items.map((item) => (
            <li key={item.id}>{item.name}</li>
          ))}
        </ul>
      )}
    </div>
  );
}

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