Is it possible to map only a portion of an array? (Array.map())

Question

I am building a project using React.js as a front-end framework. On one particular page I am displaying a full data set to the user. I have an Array which contains this full

Answer 1

Yes, you can map portion of array, based on index. For example:

yourArray = yourArray.map(function (element, index, array) {
        if (array.indexOf(element) < yourIndex) {
            return {
               //logic here
            };
        } else {
            return {
                //logic here
            };
        }

    });