convert-html-to-jsx v0.1.2

Convert-HTML-To-JSX

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Introduction

Convert HTML in plain text to JSX that React can understand.

It supports custom conversions such as other third party components or React Native components.

Due to the use of RegExpMatchArray.groups, the target version of JavaScript is es2018.

Installation

yarn add convert-html-to-jsx
# or
npm i convert-html-to-jsx

Usage

Pass in innerHTML and you're done!

import HTML2JSX from "convert-html-to-jsx"

const innerHTML = `
    <p style="font-weight: bold;">Hello, world!</p>
    <img src="http://xxx.xxx.xxx" />
    <button disabled>Click</button>
`

export default () => {
    return (
        <div>
            <HTML2JSX innerHTML={innerHTML} />
        </div>
    )
}

Note that the <script> tag and its internal text will be ignored, so if you don't want to do that, pass in enableScript={true}

Events starting with on will be ignored, if you want to handle them, please use the Conversion

Conversion

If you are not satisfied with the default conversion, or if you are using React Native, you can use the convert function to implement custom component.

interface HTMLProps {
    [PropName: string]: string | boolean | Style
}

interface EventProps {
    [PropName: string]: string
}

interface ConvertProps {
    tagName: string,
    HTMLProps: HTMLProps,
    eventProps: EventProps,
    originalElement: JSX.Element,
    children?: ReactNode,
}

type Convert = (props: ConvertProps) => JSX.Element

convert will take the following parameters:

1. tagName

   Tag names, such as p or div. tagName of Plain text is the empty string ""

2. HTMLProps

   HTML attribute object of the tag, such as src: "https://xxx" or type: "text". For those properties that do not specify a value, true will be passed. For example, the attribute in <input disabled /> will be converted to { disabled: true }

3. eventProps

   tag event objects, such as { onClick: "clickMe" }, and handle them yourself if needed

4. originalElement

   The component that will be converted to if no convert is passed in

5. children

   children of this tag

Examples

1. Disable all button tags

   const convert = (props: ConvertProps) => {
       const { tagName, HTMLProps, eventProps, originalElement, children } = props
       if (tagName === "button") {
   
           const newHTMLProps = {...HTMLProps, disabled: true}
   
           // You can use createElement
           return React.createElement("button", newHTMLProps, children )
   
           // or jsx
           return (
               <button {...newHTMLProps} >
                   {children}
               </button>
           )
       }
   
       // For those tags that don't meet the conditions, just return the processed component directly
       return originalElement
   }
   
   <HTML2JSX innerHTML={innerHTML} convert={convert} >

2. Bold the tag with id as abc

   const convert = (props: ConvertProps) => {
       const { tagName, HTMLProps, eventProps, originalElement, children } = props
       if (HTMLProps.id === "abc") {
           if (HTMLProps.style) {
               HTMLProps.style.fontWeight = "bold"
           } else {
               HTMLProps.style = { fontWeight: "bold" }
           }
           return React.createElement(tagName, HTMLProps, children )
       }
   
       // For those tags that don't meet the conditions, just return the processed component directly
       return originalElement
   }
   
   <HTML2JSX innerHTML={innerHTML} convert={convert} >

3. Replace tags with other components, which is useful when using other component libraries

   import { Image } from "antd"
   
   const convert = (props: ConvertProps) => {
   
       const { tagName, HTMLProps, eventProps, originalElement, children } = props
   
       if (tagName === "img") {
   
           // You can process HTMLProps here as props of the target component.
           // action only represents a procedure here
           const newHTMLProps = action(HTMLProps)
   
           return React.createElement(Image, newHTMLProps, children )
       }
   
       // For those tags that don't meet the conditions, just return the processed component directly
       return originalElement
   }

4. use in React Native

   HTML2JSX does not provide any conversions other than in a browser environment, but it can provide some ideas. For example, in React Native, plain text must be placed in the Text component, you could write it like this.

   import { Text } from "react-native"
   
   const convert = (props: ConvertProps) => {
   
       const { tagName, HTMLProps, eventProps, originalElement, children } = props
   
       if (tagName === "") {
   
           const newHTMLProps = action(HTMLProps)
   
           return React.createElement(Text, newHTMLProps, children )
       }
   
       if (tagName === "div") {
   
           // ...
       }
   }