Byteball.js - Get joint
HTML
<script src="https://cdn.jsdelivr.net/npm/byteball"></script>
JavaScript
var client = new byteball.Client();
const unit = 'k37Xlns198EHCtubX5X0kqbrnC9XYVTa0aFpR78gidM=';
client.api.getJoint(unit, function(err, result) {
alert(JSON.stringify(result, null, 2));
});