JSFiddle - React, Tailwind, and code Playground

HTML

<input type="text" id="entrada" value="1-2,3-4,5-6"></input>
<button id="botao">Testar</button>

JavaScript

$("#botao").click(function () {
    var regex = new RegExp(/(\d+)-(\d+)/);
    var match;
    var string = $("#entrada").val();
    if (match = regex.exec(string)) {
        while (match !== null) {
            console.log(match);
            match = regex.exec(string)
        }
    } else {
        alert("no match");
    }
});