Finding difference between consecutive numbers in an array

by debjitbis08

HTML

<input type="text" id="input"/>
<button id="submit">Submit</button>
<div id="result"></div>

JavaScript

document.getElementById("submit").addEventListener("click", function () {
    var array = JSON.parse(document.getElementById("input").value);
    var result = _.filter(_.map(_.zip(array, _.tail(array)), function (v) {
        return v[1] - v[0];
    }));
    
    document.getElementById("result").innerHTML = result;
});