Function toggle

test/jasmine/tests/polar_test.js:390–404

(astr, vals, exps, selector, fn)

        }

        function toggle(astr, vals, exps, selector, fn) {
            return function() {
                return Plotly.relayout(gd, astr, vals[0]).then(function() {
                    fn(selector, exps[0], astr + ' ' + vals[0]);
                    return Plotly.relayout(gd, astr, vals[1]);
                })
                .then(function() {
                    fn(selector, exps[1], astr + ' ' + vals[1]);
                    return Plotly.relayout(gd, astr, vals[0]);
                })
                .then(function() {
                    fn(selector, exps[0], astr + ' ' + vals[0]);
                });
            };
        }

        Plotly.newPlot(gd, fig)
        .then(toggle(