JavaScript之数据改造、后端只返回有数据的时段，没数据的时段需要前端自己补全、isArray、throw、forEach、hasOwnProperty、call、for in、push

function handleApacheECharts(existenceData) { if (!Array.isArray(existenceData)) throw new Error('not an array.'); if (!existenceData[0].time) throw new Error('data error.'); let obj = { 1: { time: "08:00-09:00", value: 0, }, 2: { time: "09:00-10:00", value: 0, }, 3: { time: "10:00-11:00", value: 0, }, 4: { time: "11:00-12:00", value: 0, }, 5: { time: "12:00-13:00", value: 0, }, 6: { time: "13:00-14:00", value: 0, }, 7: { time: "14:00-15:00", value: 0, }, 8: { time: "15:00-16:00", value: 0, }, 9: { time: "16:00-17:00", value: 0, }, }, arr = { time: [], value: [] }; existenceData.forEach(item => { for (const key in item) { if (Object.hasOwnProperty.call(item, key)) { if (key === 'time') obj[item[key] - 7].value = item.value; } } }); for (const j in obj) { if (Object.hasOwnProperty.call(obj, j)) { let item = obj[j]; for (const key in item) { if (Object.hasOwnProperty.call(item, key)) { if (key === "time") { arr.time.push(item[key]); } else if (key === "value") { arr.value.push(item[key]); } } } } } return arr; } console.log(handleApacheECharts([{ time: '10', value: 30 }, { time: '16', value: 10 }, { time: '16', value: 70 }])); console.log(handleApacheECharts()); console.log(handleApacheECharts('')); console.log(handleApacheECharts(1)); console.log(handleApacheECharts({})); console.log(handleApacheECharts([1, 2]));