/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

105 votes213 views1 answer
React simbu
Javascript React
0 vote203 views1 answer
Get all database react native
Javascript React
0 vote201 views1 answer
React import useCallBack
Javascript React
0 vote260 views2 answers
Combine p5 with react
Javascript React
3 votes222 views3 answers
How to remove global react-native-cli package
Javascript React
0 vote209 views1 answer
React native shadow maker
Javascript React
-5 votes217 views3 answers
Use ref in component reactjs
Javascript React
0 vote204 views1 answer
Valueof in react native
Javascript React
0 vote230 views1 answer
Getting state in react-router-dom v6
Javascript React
0 vote231 views1 answer
Copy paste menu react native textinput disable
Javascript React