/Javascript/React/How to add a key in a react element

How to add a key in a react element

    var lists = this.state.lists.map(function(list, index) {
        return(
            <div key={index}>
                <div key={list.name} id={list.name}>
                    <h2 key={"header"+list.name}>{list.name}</h2>
                    <ListForm update={lst.updateSaved} name={list.name}/>
                </div>
            </div>
        )
    });

Source: stackoverflow.com

Similar codes

64 votes425 views7 answers
React router
Javascript React
4 votes359 views1 answer
Navigating programatically react
Javascript React
0 vote420 views1 answer
Chinese icon in react native vector icons
Javascript React
0 vote411 views1 answer
React-bootstrap problem-import new version
Javascript React
0 vote377 views1 answer
React handling event
Javascript React
1 vote375 views1 answer
React native header
Javascript React
1 vote379 views1 answer
Have flat list automatically wrap react native
Javascript React
0 vote426 views1 answer
React native keyboard event listener
Javascript React
0 vote405 views1 answer
Qr code generator in react native
Javascript React
0 vote374 views1 answer
Pagination hook react
Javascript React