我正在使用vue-cli,并且试图弄清楚如何在Tasks数组中获得活动总数。
Tasks: [
{name: 'Sam', available: [{active: 'yes', day:'Mon'},{active: 'yes', day:'Tues'}]},
{name: 'Yoko', available: [{active: 'yes', day:'Mon'}]},
{name: 'Alec', available: [{active: 'yes', day:'Wed'},{active: 'yes', day:'Thurs'}]},
{name: 'Pat', available: [{active: 'yes', day:'Tues'},{active: 'yes', day:'Thurs'} ]}
]
Expected output:
Total: 7
任何帮助将是巨大的,谢谢!
您需要遍历任务数组,过滤活动项并使用reduce方法对其求和:
const tasks = [
{name: 'Sam', available: [{active: 'yes', day:'Mon'},{active: 'yes', day:'Tues'}]},
{name: 'Yoko', available: [{active: 'yes', day:'Mon'}]},
{name: 'Alec', available: [{active: 'yes', day:'Wed'},{active: 'yes', day:'Thurs'}]},
{name: 'Pat', available: [{active: 'yes', day:'Tues'},{active: 'yes', day:'Thurs'} ]}
];
const total = tasks.reduce((sum, task) => {
return sum + (task.available.filter(item => item.active === 'yes')).length
}, 0)
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