data() {
    return {
        ...,
        path: 'res',	//这个节点是根节点，官方Demo有，点击节点会触发
        data:[{
            news_id: 51184,
            title: 'iPhone X Review: Innovative future with real black technology',
            source: 'Netease phone'
        }, {
            news_id: 51183,
            title: 'Traffic paradise: How to design streets for people and unmanned vehicles in the future?',
            source: 'Netease smart',
            link: 'http://netease.smart/traffic-paradise/1235'
        }, {
            news_id: 51182,
            title: 'Teslamask\'s American Business Relations: The government does not pay billions to build factories',
            source: 'AI Finance',
            members: ['Daniel', 'Mike', 'John']
    	}],
		highlightArray: [
          "res[2].source"//这里res，就表示上面的res
        ]
	}
}