/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

0 vote172 views1 answer
React router v6 lazy suspense
Javascript React
0 vote177 views2 answers
Install boxicons in react
Javascript React
0 vote163 views1 answer
React-native resource android:attr/lStar not found in Android
Javascript React
91 votes349 views7 answers
React-router-dom
Javascript React
0 vote156 views1 answer
(0 , _reactRouterDom.useHistory) is not a function
Javascript React
0 vote207 views1 answer
React inject component into another component
Javascript React
1 vote166 views1 answer
React map array limit
Javascript React
0 vote183 views1 answer
React native dynamic style
Javascript React
2 votes178 views1 answer
This.setstate is not a function in react native
Javascript React
16 votes170 views4 answers
Uuid react
Javascript React