Do you know these practical tips for Vue?

Vue.js is one of the most popular frameworks in front-end development today. It is easy to learn, yet very powerful, with many efficient, flexible and useful features. This article will introduce some practical tips of Vue.js to help you better use Vue.js to develop excellent applications.

1. Use v-show instead of v-if

Using v-if to control the appearance and disappearance of DOM elements sometimes causes the browser to re-render, affecting performance. If we need to frequently control the display and hiding of a DOM element on the page, it is recommended to use the v-show directive instead of v-if, which can achieve the same effect without causing re-rendering.

2. Use v-cloak to prevent flickering

The rendering mechanism of Vue.js is asynchronous, which sometimes results in seeing a blank area before the component rendering is completed. This is the so-called flickering problem. . The v-cloak directive can help us solve this problem. Just add the [v-cloak] selector in CSS and add the v-cloak attribute on the element.

[v-cloak] {
  display: none;
}

3. Use v-for loop

In Vue.js, we can use the v-for instruction to loop and render DOM elements. The v-for instruction can loop through arrays, objects, strings, etc. Use the v-for directive to quickly create multiple similar elements without writing duplicate content.

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

4. Use computed properties

Computed properties are one of the most powerful features in Vue.js. It can calculate the value of a new attribute based on the value of other attributes. Using computed properties can effectively reduce the complexity of expressions and methods in templates.

<div>
  <p>{{ message }}</p>
  <p>{{ reversedMessage }}</p>
</div>

<script>
  export default {
    data() {
      return {
        message: 'Hello Vue!',
      };
    },
    computed: {
      reversedMessage() {
        return this.message.split('').reverse().join('');
      },
    },
  };
</script>

5. Using JSX

JSX is a JavaScript syntax extension that allows us to write HTML-like code in JavaScript. Vue.js 2.0 supports the use of JSX to write Vue components, which makes component writing more flexible and clear. At the same time, using JSX can also make us write components more efficiently, greatly reducing the amount of code written.

export default {
  render() {
    return (
      <div>
        <p>{this.message}</p>
      </div>
    );
  },
  data() {
    return {
      message: 'Hello Vue!',
    };
  },
};

The above are some practical tips for Vue.js. Through the application of these tips, your Vue.js programming will be easier and more efficient. Whether you are a beginner or an experienced developer, these tips will help you better utilize the power of Vue.js and create more powerful applications.

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