box-client/assets/script/launch/view/VersionLabel.js

cc.Class({
    extends: cc.Component,

    editor: {
        menu: 'Launch/VersionLabel'
    },

    onLoad () {
        let curVersion = G.MiddleDevice.getVersionName();
        let label = this.node.getComponent(cc.Label);
        label.string = `${curVersion} - ${ G.RES_VERSION}`;
    }
});