/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

3 votes327 views1 answer
Latest react version npm
Javascript React
6 votes344 views2 answers
React in jquery
Javascript React
9 votes356 views3 answers
React js Uncaught RangeError: Maximum call stack size exceeded
Javascript React
0 vote350 views1 answer
How to call api on load using hooks in react
Javascript React
7 votes354 views4 answers
React native textinput disable keyboard
Javascript React
0 vote373 views3 answers
Play sound onload react
Javascript React
5 votes341 views1 answer
React in laravel
Javascript React
0 vote335 views2 answers
Add typescript to react-native
Javascript React
0 vote329 views1 answer
Play 2 audio react
Javascript React
1 vote380 views2 answers
Switch in react
Javascript React