React - How to pass HTML tags in props?

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甜味超标
甜味超标 2020-12-07 11:58

I want to be able to pass text with HTML tags, like so:

not working.\" />

Bu

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  • 2020-12-07 12:28

    Actually, there are multiple ways to go with that.

    You want to use JSX inside your props

    You can simply use {} to cause JSX to parse the parameter. The only limitation is the same as for every JSX element: It must return only one root element.

    myProp={<div><SomeComponent>Some String</div>}
    

    The best readable way to go for this is to create a function renderMyProp that will return JSX components (just like the standard render function) and then simply call myProp={ this.renderMyProp() }

    You want to pass only HTML as a string

    By default, JSX doesn't let you render raw HTML from string values. However, there is a way to make it do that:

    myProp="<div>This is some html</div>"
    

    Then in your component you can use it like that:

    <div dangerouslySetInnerHTML=myProp={{ __html: this.renderMyProp() }}></div>
    

    Beware that this solution 'can' open on cross-site scripting forgeries attacks. Also beware that you can only render simple HTML, no JSX tag or component or other fancy things.

    The array way

    In react, you can pass an array of JSX elements. That means:

    myProp={["This is html", <span>Some other</span>, "and again some other"]}
    

    I wouldn't recommend this method because:

    • It will create a warning (missing keys)
    • It's not readable
    • It's not really the JSX way, it's more a hack than an intended design.

    The children way

    Adding it for the sake of completeness but in react, you can also get all children that are 'inside' your component.

    So if I take the following code:

    <SomeComponent>
        <div>Some content</div>
        <div>Some content</div>
    </SomeComponent>
    

    Then the two divs will be available as this.props.children in SomeComponent and can be rendered with the standard {} syntax.

    This solution is perfect when you have only one HTML content to pass to your Component (Imagine a Popin component that only takes the content of the Popin as children).

    However, if you have multiple contents, you can't use children (or you need at least to combine it with another solution here)

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  • 2020-12-07 12:28

    You can do it in 2 ways that I am aware of.

    1- <MyComponent text={<p>This is <strong>not</strong> working.</p>} />

    And then do this

    class MyComponent extends React.Component {
       render () {
         return (<div>{this.props.text}</div>)
       }
    }
    

    Or second approach do it like this

    2- <MyComponent><p>This is <strong>not</strong> working.</p><MyComponent/>

    And then do this

    class MyComponent extends React.Component {
       render () {
         return (<div>{this.props.children}</div>)
       }
    }
    
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  • 2020-12-07 12:28

    Yes, you can it by using mix array with strings and JSX elements. reference

    <MyComponent text={["This is ", <strong>not</strong>,  "working."]} />
    
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  • 2020-12-07 12:31

    We can do the same thing in such a way.

    const Child = () => {
      return (
         write your whole HTML here.
      )
    }
    

    now you want to send this HTML inside another component which name is Parent component.

    Calling :-

    <Parent child={<child/>} >
    </Parent> 
    

    Use Of Child:-

     const Parent = (props) => {
       const { child } = props; 
       return (
           {child}
        )
    }
    

    this work perfect for me.

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  • 2020-12-07 12:36

    You can use dangerouslySetInnerHTML

    Just send the html as a normal string

    <MyComponent text="This is <strong>not</strong> working." />
    

    And render in in the JSX code like this:

    <h2 className="header-title-right wow fadeInRight"
        dangerouslySetInnerHTML={{__html: props.text}} />
    

    Just be careful if you are rendering data entered by the user. You can be victim of a XSS attack

    Here's the documentation: https://facebook.github.io/react/tips/dangerously-set-inner-html.html

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  • 2020-12-07 12:36

    For me It worked by passing html tag in props children

    <MyComponent>This is <strong>not</strong> working.</MyComponent>
    
    
    var MyComponent = React.createClass({
    
       render: function() {
        return (
          <div>this.props.children</div>
        );
       },
    
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