How to Use the Code Editor in Vue3

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Using CodeMirror in Front-End Development

If you need an online code editor for your front-end web page, CodeMirror is a popular JavaScript library that you can embed.

Changelog:

Version 2.3.0

Date: March 7, 2023

Installation:

npm install codemirror-editor-vue3 codemirror@5.x -S

yarn add codemirror-editor-vue3 codemirror@5.x

pnpm i codemirror-editor-vue3 codemirror@^5.65.12 -S

If your project uses TypeScript, you also need to install the dependencies:

npm install @types/codemirror -D

// Import
import { InstallCodemirror } from "codemirror-editor-vue3";

However, global registration is not recommended as it may lead to incorrect template type prompts. It is better to use it within the component.

// Import themes, you can import multiple from codemirror/theme/ import ‘codemirror/theme/dracula.css’

// Import language modes, you can import multiple from codemirror/mode/ import “codemirror/mode/javascript/javascript.js”

Official Example:

<template>
  <Codemirror
    v-model:value="code"
    :options="cmOptions"
    border
    placeholder="test placeholder"
    :height="200"
    @change="change"
  />
</template>

<script>
import Codemirror from "codemirror-editor-vue3";

// Import placeholder
import "codemirror/addon/display/placeholder.js";

// Import language modes
import "codemirror/mode/javascript/javascript.js";
// Import placeholder
import "codemirror/addon/display/placeholder.js";
// Import theme
import "codemirror/theme/dracula.css";

import { ref } from "vue";
export default {
  components: { Codemirror },
  setup() {
    const code = ref(`
var i = 0;
for (; i < 9; i++) {
  console.log(i);
  // more statements
}`);

    return {
      code,
      cmOptions: {
        mode: "text/javascript", // Language mode
        theme: "dracula", // Theme
      },
    };
  },
};
</script>

Common Attributes:

border: Border, default value: false

width, height: Width and height settings

KeepCursorInEnd: Keep the cursor at the end of the content, default value: false

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