Vue 获取数组键名的方法

"head": [{
"brand": "../static/images/brand.svg"
}],
"main": [{
"教程": []
},

<h1> 
{{Object.keys(sMain)[0]}}
<h1>

import source from './assets/data/source.json'
export default {
data () {
return {
sHead: source.head[0],
sMain: source.main[0]
}
}
}