I have a array of object like this this
const timings = [{
monday: { from: "12:00", to: "13:00" },
tuesday: { from: "11:00", to: "13:00" },
thursday: { from: "11:00", to: "13:00" },
friday: { from: "11:00", to: "13:00" },
saturday: { from: "11:00", to: "13:00" },
},
{
monday: { from: "10:00", to: "17:00" },
tuesday: { from: "09:00", to: "10:00" },
thursday: { from: "05:00", to: "13:00" },
friday: { from: "02:00", to: "13:30" },
saturday: { from: "11:00", to: "13:00" },
},
{
monday: { from: "13:00", to: "14:20" },
tuesday: { from: "11:00", to: "13:00" },
thursday: { from: "11:00", to: "13:00" },
friday: { from: "11:00", to: "13:00" },
saturday: { from: "11:00", to: "13:00" },
},
{
monday: { from: "12:00", to: "13:00" },
tuesday: { from: "11:00", to: "13:40" },
thursday: { from: "11:00", to: "16:00" },
friday: { from: "11:00", to: "13:00" },
saturday: { from: "11:00", to: "13:00" },
sunday: {from: "00:00", to: "23:59"}
},
]
I want the output to contain the lowest and highest timing of the day from the array
eg output:
{
monday: { from: "10:00", to: "17:00" },
tuesday: { from: "09:00", to: "13:40" },
thursday: { from: "05:00", to: "16:00" },
friday: { from: "02:00", to: "13:30" },
saturday: { from: "11:00", to: "13:00" },
sunday: {from: "00:00", to: "23:59"}
}
I came up with the really long solution, but its really long and not efficient.
my solution
mondayFrom = timings.map(d => (d.monday && d.monday.from))
mondayTo = timings.map(d => (d.monday && d.monday.to))
tuesdayFrom = timings.map(d => (d.tuesday && d.tuesday.to))
// .... rest of the days
this will generate array from which i can find the minimum and maximum, but I feel its a bad logic.
If there is a better way, Please let me know.
Thank you
using reduce makes it fairly simple
const timings = [{
monday: { from: "12:00", to: "13:00" },
tuesday: { from: "11:00", to: "13:00" },
thursday: { from: "11:00", to: "13:00" },
friday: { from: "11:00", to: "13:00" },
saturday: { from: "11:00", to: "13:00" },
},
{
monday: { from: "10:00", to: "17:00" },
tuesday: { from: "09:00", to: "10:00" },
thursday: { from: "05:00", to: "13:00" },
friday: { from: "02:00", to: "13:30" },
saturday: { from: "11:00", to: "13:00" },
},
{
monday: { from: "13:00", to: "14:20" },
tuesday: { from: "11:00", to: "13:00" },
thursday: { from: "11:00", to: "13:00" },
friday: { from: "11:00", to: "13:00" },
saturday: { from: "11:00", to: "13:00" },
},
{
monday: { from: "12:00", to: "13:00" },
tuesday: { from: "11:00", to: "13:40" },
thursday: { from: "11:00", to: "16:00" },
friday: { from: "11:00", to: "13:00" },
saturday: { from: "11:00", to: "13:00" },
sunday: {from: "00:00", to: "23:59"}
},
]
let result = timings.reduce((a, x) => {
Object.entries(x).forEach(([dow, obj]) => {
if(!a[dow]) {
a[dow] = Object.assign({}, obj);
} else {
a[dow].from = a[dow].from < obj.from ? a[dow].from : obj.from;
a[dow].to = a[dow].to > obj.to ? a[dow].to : obj.to;
}
});
return a;
}, {});
console.log(result);
note: a[dow] = Object.assign({}, obj); so the original object won't get mutated
Here is an exemple using .reduce:
const timings = [{
monday: { from: "12:00", to: "13:00" },
tuesday: { from: "11:00", to: "13:00" },
thursday: { from: "11:00", to: "13:00" },
friday: { from: "11:00", to: "13:00" },
saturday: { from: "11:00", to: "13:00" },
},
{
monday: { from: "10:00", to: "17:00" },
tuesday: { from: "09:00", to: "10:00" },
thursday: { from: "05:00", to: "13:00" },
friday: { from: "02:00", to: "13:30" },
saturday: { from: "11:00", to: "13:00" },
},
{
monday: { from: "13:00", to: "14:20" },
tuesday: { from: "11:00", to: "13:00" },
thursday: { from: "11:00", to: "13:00" },
friday: { from: "11:00", to: "13:00" },
saturday: { from: "11:00", to: "13:00" },
},
{
monday: { from: "12:00", to: "13:00" },
tuesday: { from: "11:00", to: "13:40" },
thursday: { from: "11:00", to: "16:00" },
friday: { from: "11:00", to: "13:00" },
saturday: { from: "11:00", to: "13:00" },
sunday: {from: "00:00", to: "23:59"}
},
];
const formatTimings = function(timings) {
return timings.reduce(function(result, timing) {
Object.keys(timing).forEach(function(key) {
result[key] = {
from: !result[key]
? timing[key].from
: [result[key].from, timing[key].from].sort()[0],
to: !result[key]
? timing[key].to
: [result[key].to, timing[key].to].sort().reverse()[0]
};
})
return result
}, {})
}
console.log(formatTimings(timings));
