How to show html entity using React?

问题

I am wanting to show the 'cubic' html entity (superscript 3). I am doing like this:

const formatArea = function(val){
    return val + " ft&sup3;";
}

where formatArea is being called from inside the component':

render(){
    return (
        <div>
            {formatArea(this.props.area)}
        </div>
    );
}

but, the browser is showing it as ft³

回答1:

Another option is to use fromCharCode method:

const formatArea = function(val){
    return val + ' ft' + String.fromCharCode(179);
}

回答2:

Found this way using JSX:

const formatArea = (val) => {
    return (<span>{val}&nbsp;ft<sup>3</sup></span>);
}

回答3:

You can get that using dangerouslySetInnerHTML feature of jsx.

Another way would be use correspond unicode character of html entity and just use as normal string.

const formatArea = function(val){
    return val + " ft&sup3;";
}

const Comp = ({text}) => (
<div>
<div dangerouslySetInnerHTML={{__html: `${text}`}} />
<div>{'53 ft\u00B3'}</div>
</div>

);

ReactDOM.render( <Comp text={formatArea(53)} /> ,
  document.getElementById('root')
);

<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react-dom.min.js"></script>
<div id="root"></div>

回答4:

Method 1

const formatArea = val => <div>{val} ft{'³'}</div>
Method 2

const formatArea = val => <div>{val} ft{'\u00B3'}</div>
Method 3: fromCharCode

const formatArea = val => <div>{val} ft{String.fromCharCode(parseInt('B3', 16))}</div>
Method 4

const formatArea = val => <div>{val} ft{String.fromCharCode(179)}</div>
Method 5: HTML Codes

const formatArea = val => <div>{val} ft³</div>
Method 6

const formatArea = val => <div>{val} ft³</div>
Method 7

const formatArea = val => <div>{val} ft<sup>3</sup></div>

Then you can render it:

render() {
  return (
    {formatArea(this.props.area)}
  )
}

回答5:

New way using React's fragments: <>³</>.

In your case it can be:

const formatArea = function(val){
    return <>{val + ' '}&sup3;</>
}

来源：https://stackoverflow.com/questions/44116800/how-to-show-html-entity-using-react

标签

reactjs

superscript