v-code-diff

v-code-diff

A code diff display plugin, available for Vue2 / Vue3.

English | 简体中文

Old Version:

0.x version, latest version 0.3.12 (traditional version, improved based on vue-code-diff, is no longer maintained. We will try to align the functionality of 0.x version in 1.x version and minimize migration cost as much as possible). This project references the following projects, and I would like to express my gratitude to the original authors!

• vue-diff
• vue-code-diff
• Github Code Diff

Contents

• Install
• Getting started
  • Vue3
  • Vue2
• Props
• Events
• Demo
• Extend languages
• Migrate from 0.x version

Install

install v-code-diff

# npm
npm i v-code-diff

# yarn
yarn add v-code-diff

# pnpm
pnpm add v-code-diff

Vue2.6 developers need install composition-api

pnpm add @vue/composition-api

Getting Started

Vue3

Register locally

Recommend using local registration for better tree-shaking support.

<script setup>
import { CodeDiff } from 'v-code-diff'
</script>

<template>
  <div>
    <CodeDiff
      old-string="12345"
      new-string="3456"
      output-format="side-by-side"
    />
  </div>
</template>

Register globally

import { createApp } from 'vue'
import CodeDiff from 'v-code-diff'

app
  .use(CodeDiff)
  .mount('#app')

then

<template>
  <code-diff
    old-string="12345"
    new-string="3456"
    output-format="side-by-side"
  />
</template>

Vue2

Register locally

Recommend using local registration for better tree-shaking support.

<script>
import { CodeDiff } from 'v-code-diff'
export default {
  components: {
    CodeDiff
  }
}
</script>

<template>
  <div>
    <CodeDiff
      old-string="12345"
      new-string="3456"
      output-format="side-by-side"
    />
  </div>
</template>

Register globally

import Vue from 'vue'
import CodeDiff from 'v-code-diff'

Vue.use(CodeDiff)

Demo

	npm	cdn
vue2		vue2-cdn
vue2.7		vue27-cdn
vue3		vue3-cdn

Props

Prop	Description	Type	Optional Values	Default Value
language	Code language, such as typescript, defaults to plain text. View all supported languages	string	-	plaintext
oldString	Old string	string	-	-
newString	New string	string	-	-
context	The number of lines to separate different parts so that they are not hidden	number	-	10
outputFormat	Display mode	string	line-by-line，side-by-side	line-by-line
diffStyle	Difference style, word-level differences or letter-level differences	string	word, char	word
forceInlineComparison	Force inline comparison (word or char level)	boolean	-	false
trim	Remove blank characters at the beginning and end of the string	boolean	-	false
noDiffLineFeed	Don't diff Windows line feed (CRLF) and Linux line feed (LF)	boolean	-	false
maxHeight	Maximum height of component, for example: 300px	string	-	undefined
filename	Filename	string	-	undefined
newFilename	New filename	string	-	undefined
hideHeader	Hide header bar	boolean	-	false
hideStat	Hide statistical part in the header bar	boolean	-	false
theme	Add dark mode	ThemeType	light , dark	light
ignoreMatchingLines	Give a pattern to ignore matching lines eg: '(time|token)'	string	-	undefined

Events

Name	Description	Type
diff	triggers when diff finished	(result: {stat: { isChanged: boolean, addNum: number, delNum: number}}) => void

Slot

Name	Description
stat	Custom statistical content, The scope parameter is { stat }

Extend languages

In order to reduce the size of the packaged file, the system only supports the following commonly used languages by default.

• plaintext
• xml/html
• javascript
• json
• yaml
• python
• java
• bash
• sql

If the language you need is not included, you can manually import the relevant language highlighting module.

pnpm add highlight.js

Register locally

Recommend using local registration for better tree-shaking support.

<script>
import { CodeDiff, hljs } from 'v-code-diff'
import c from 'highlight.js/lib/languages/c'
// Extend C language
hljs.registerLanguage('c', c)
export default {
  components: {
    CodeDiff,
  }
}
</script>

<template>
  <div>
    <CodeDiff
      old-string="#include <stdio.h>"
      new-string="#include <stdio.h>\nint a = 1;"
      output-format="side-by-side"
      language="c"
    />
  </div>
</template>

Register globally

import CodeDiff from 'v-code-diff'
// Extend C language
import c from 'highlight.js/lib/languages/c'

CodeDiff.hljs.registerLanguage('c', c)

Migrate from 0.x version

The v-code-diff 1.x version has features such as reduced packaging size and improved performance compared to the 0.x version. And we will try to align the functions with the 0.x version as much as possible to reduce your migration cost.

Key points:

• In the 1.x version, language recognition and highlighting will no longer be automatically performed, you need to manually specify the language type, such as language="python", if not specified, it will default to plaintext and will not be highlighted.
• In the 1.x version, due to the fact that rendering and highlighting are performed at the same time, the component events have been removed.
• In the 1.x version, the following component properties (Prop) have been changed:
  • highlight - removed
  • drawFileList - removed
  • fileName - rename to "filename"
  • newFilename - new
  • theme - new

Below is a detailed comparison of the two versions, you can refer to it to complete the migration.

The difference of event.

The component events are no longer provided in the 1.x version as rendering and highlighting are carried out simultaneously.

Event Name	Change Status
before-render	No longer provided
after-render	No longer provided

The difference of prop.

Prop	Description	Change Status
highlight	Control code highlighting	Removed in version 1.x
language	Code language	None
oldString	Old string	None
newString	New string	None
context	The number of lines to separate different parts so that they are not hidden	None
output-format	Display mode	None
diffStyle	Difference style, word-level differences or letter-level differences	None
drawFileList	Display file comparison list	Removed in version 1.x
renderNothingWhenEmpty	Do not render when there is no comparison	Removed in version 1.x
fileName	File name	To be determined, not under development
newFilename		New in version 1. To be determined, not under development
isShowNoChange	Display source code when there is no comparison	Removed as it became the default in version 1.x
trim	Remove blank characters at the beginning and end of the string	None
noDiffLineFeed	Don't diff Windows line feed (CRLF) and Linux line feed (LF)	None
theme	Add dark mode	New in version 1

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