When giving unique keys to components, is it okay to use Math.random() for generating those keys?

Question

Problem is the following:

I have data in form of a list of a few thousand elements. Some of them are duplicates, and there might be the chance of having duplicate ke

Answer 1

Just implement the following code in your react component...

constructor( props ) {
    super( props );

    this.keyCount = 0;
    this.getKey = this.getKey.bind(this);
}

getKey(){
    return this.keyCount++;
}

...and call this.getKey() every time you need a new key like:

key={this.getKey()}