phaser4-rex-plugins/templates/ui/tabpages/methods/GetPageIndexByKey.js

Plugins of phaser4

var GetPageIndexByKey = function (key) {
    var buttons = this.getElement('tabs.buttons');
    for (var i = 0, cnt = buttons.length; i < cnt; i++) {
        if (buttons[i].name === key) {
            return i;
        }
    }

    return undefined;
}

export default GetPageIndexByKey;