JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
<div id="container" class="row">
    <div class="col-sm-3 panel panel-info">test
        <br />test
        <br />test
        <br />test
        <br />test
        <br />test</div>
    <div class="col-sm-3 panel panel-info">test
        <br />test
        <br />test
        <br />test
        <br />test
        <br />test
        <br />test
        <br />test
        <br />test
        <br />test</div>
    <div class="col-sm-4 panel panel-info">test
        <br />test
        <br />test
        <br />test
        <br />test
        <br />test
        <br />test</div>
    <div class="col-sm-4 panel panel-info">test
        <br />test
        <br />test
        <br />test
        <br />test</div>
    <div class="col-sm-4 panel panel-info">test
        <br />test
        <br />test
        <br />test
        <br />test
        <br />test</div>
</div>

JavaScript

equalheight = function (container) {
            var currentRow = {
                cols: [],
                h: 0
            };
            var topPostion = -1;
            $(container).each(function () {
                var $el = $(this);
                $($el).height('auto')
                if (topPostion != $el.position().top) {
                    for (var j = 0; j < currentRow.cols.length; j++) {
                        currentRow.cols[j].height(currentRow.h);
                    }
                    topPostion = $el.position().top;
                    currentRow = {
                        cols: [],
                        h: 0
                    };
                }
                currentRow.cols.push($el);
                if ($el.height() > currentRow.h) {
                    currentRow.h = $el.height();
                }


            });
            for (var j = 0; j < currentRow.cols.length; j++) {
                currentRow.cols[j].height(currentRow.h);
            }

        }
        equalheight('.panel');
        $(window).load(function () {
            equalheight('.panel');
        });

        $(window).resize(function () {
            equalheight('.panel');
        });