how to sort JSON by date?
up vote
-2
down vote
favorite
this is my json:
and i want to sort this json by date and time. i write below code but it does not work.
this.newsArray.sort((a, b) =>
new Date(b.time).getTime() - new Date(a.time).getTime());
newsArray contain 4 items as you can see in picture.
how can i fix this problem ?
javascript json angular typescript
asked Nov 17 at 19:34
Mohandes
327
add a comment |
up vote
-2
down vote
favorite
this is my json:
and i want to sort this json by date and time. i write below code but it does not work.
this.newsArray.sort((a, b) =>
new Date(b.time).getTime() - new Date(a.time).getTime());
newsArray contain 4 items as you can see in picture.
how can i fix this problem ?
javascript json angular typescript
asked Nov 17 at 19:34
Mohandes
327
1
Your code does not reference thedateproperty at all.
– TypeIA
Nov 17 at 19:36
sorting JSON?We usually sort Arrays that have an index
– El.
Nov 17 at 19:37
2
Please post your array as text, not as a screenshot.
– ggorlen
Nov 17 at 19:39
1
You need to compare the two date values correctly. See the constructor of Date and properly create a date object out ofitem.dateanditem.time. Then, compare the two objects as described in this answer. There are also libraries for this case of date comparison (date-fns, moment.js, luxon, etc.)
– ssc-hrep3
Nov 17 at 19:40
add a comment |
up vote
-2
down vote
favorite
up vote
-2
down vote
favorite
this is my json:
and i want to sort this json by date and time. i write below code but it does not work.
this.newsArray.sort((a, b) =>
new Date(b.time).getTime() - new Date(a.time).getTime());
newsArray contain 4 items as you can see in picture.
how can i fix this problem ?
javascript json angular typescript
asked Nov 17 at 19:34
Mohandes
327
this is my json:
and i want to sort this json by date and time. i write below code but it does not work.
this.newsArray.sort((a, b) =>
new Date(b.time).getTime() - new Date(a.time).getTime());
newsArray contain 4 items as you can see in picture.
how can i fix this problem ?
javascript json angular typescript
javascript json angular typescript
asked Nov 17 at 19:34
Mohandes
327
asked Nov 17 at 19:34
Mohandes
327
asked Nov 17 at 19:34
Mohandes
327
asked Nov 17 at 19:34
Mohandes
327
asked Nov 17 at 19:34
Mohandes
327
327
1
Your code does not reference thedateproperty at all.
– TypeIA
Nov 17 at 19:36
sorting JSON?We usually sort Arrays that have an index
– El.
Nov 17 at 19:37
2
Please post your array as text, not as a screenshot.
– ggorlen
Nov 17 at 19:39
1
You need to compare the two date values correctly. See the constructor of Date and properly create a date object out ofitem.dateanditem.time. Then, compare the two objects as described in this answer. There are also libraries for this case of date comparison (date-fns, moment.js, luxon, etc.)
– ssc-hrep3
Nov 17 at 19:40
add a comment |
1
Your code does not reference thedateproperty at all.
– TypeIA
Nov 17 at 19:36
sorting JSON?We usually sort Arrays that have an index
– El.
Nov 17 at 19:37
2
Please post your array as text, not as a screenshot.
– ggorlen
Nov 17 at 19:39
1
You need to compare the two date values correctly. See the constructor of Date and properly create a date object out ofitem.dateanditem.time. Then, compare the two objects as described in this answer. There are also libraries for this case of date comparison (date-fns, moment.js, luxon, etc.)
– ssc-hrep3
Nov 17 at 19:40
1
1
Your code does not reference the
date property at all.– TypeIA
Nov 17 at 19:36
Your code does not reference the
date property at all.– TypeIA
Nov 17 at 19:36
sorting JSON?We usually sort Arrays that have an index
– El.
Nov 17 at 19:37
sorting JSON?We usually sort Arrays that have an index
– El.
Nov 17 at 19:37
2
2
Please post your array as text, not as a screenshot.
– ggorlen
Nov 17 at 19:39
Please post your array as text, not as a screenshot.
– ggorlen
Nov 17 at 19:39
1
1
You need to compare the two date values correctly. See the constructor of Date and properly create a date object out of
item.date and item.time. Then, compare the two objects as described in this answer. There are also libraries for this case of date comparison (date-fns, moment.js, luxon, etc.)– ssc-hrep3
Nov 17 at 19:40
You need to compare the two date values correctly. See the constructor of Date and properly create a date object out of
item.date and item.time. Then, compare the two objects as described in this answer. There are also libraries for this case of date comparison (date-fns, moment.js, luxon, etc.)– ssc-hrep3
Nov 17 at 19:40
add a comment |
2 Answers
2
active
oldest
votes
up vote
3
down vote
accepted
You're creating the Date object with just the time which results in an invalid date. Use the date and the time to create your date object:
const newsArray = [
{date: '2018-11-17', time: '18:35:00'},
{date: '2018-11-17', time: '17:35:00'},
{date: '2018-11-17', time: '16:20:00'},
{date: '2018-11-17', time: '20:39:00'},
];
const res = newsArray.sort((a, b) =>
new Date(b.date + ' ' + b.time).getTime() - new Date(a.date + ' ' + a.time).getTime());
console.log(res);answered Nov 17 at 19:42
slider
6,3051129
add a comment |
up vote
0
down vote
You're trying to construct a date from a string like '12:00:00' which is an invalid date.
Try combining .date and .time to make something Date can interpret:
this.newsArray.sort((a, b) =>
new Date(b.date + 'T' + b.time).getTime() - new Date(a.date + 'T' + a.time).getTime());
answered Nov 17 at 19:42
Jim B.
2,076828
add a comment |
2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
3
down vote
accepted
You're creating the Date object with just the time which results in an invalid date. Use the date and the time to create your date object:
const newsArray = [
{date: '2018-11-17', time: '18:35:00'},
{date: '2018-11-17', time: '17:35:00'},
{date: '2018-11-17', time: '16:20:00'},
{date: '2018-11-17', time: '20:39:00'},
];
const res = newsArray.sort((a, b) =>
new Date(b.date + ' ' + b.time).getTime() - new Date(a.date + ' ' + a.time).getTime());
console.log(res);answered Nov 17 at 19:42
slider
6,3051129
add a comment |
up vote
3
down vote
accepted
You're creating the Date object with just the time which results in an invalid date. Use the date and the time to create your date object:
const newsArray = [
{date: '2018-11-17', time: '18:35:00'},
{date: '2018-11-17', time: '17:35:00'},
{date: '2018-11-17', time: '16:20:00'},
{date: '2018-11-17', time: '20:39:00'},
];
const res = newsArray.sort((a, b) =>
new Date(b.date + ' ' + b.time).getTime() - new Date(a.date + ' ' + a.time).getTime());
console.log(res);answered Nov 17 at 19:42
slider
6,3051129
add a comment |
up vote
3
down vote
accepted
up vote
3
down vote
accepted
You're creating the Date object with just the time which results in an invalid date. Use the date and the time to create your date object:
const newsArray = [
{date: '2018-11-17', time: '18:35:00'},
{date: '2018-11-17', time: '17:35:00'},
{date: '2018-11-17', time: '16:20:00'},
{date: '2018-11-17', time: '20:39:00'},
];
const res = newsArray.sort((a, b) =>
new Date(b.date + ' ' + b.time).getTime() - new Date(a.date + ' ' + a.time).getTime());
console.log(res);answered Nov 17 at 19:42
slider
6,3051129
You're creating the Date object with just the time which results in an invalid date. Use the date and the time to create your date object:
const newsArray = [
{date: '2018-11-17', time: '18:35:00'},
{date: '2018-11-17', time: '17:35:00'},
{date: '2018-11-17', time: '16:20:00'},
{date: '2018-11-17', time: '20:39:00'},
];
const res = newsArray.sort((a, b) =>
new Date(b.date + ' ' + b.time).getTime() - new Date(a.date + ' ' + a.time).getTime());
console.log(res);const newsArray = [
{date: '2018-11-17', time: '18:35:00'},
{date: '2018-11-17', time: '17:35:00'},
{date: '2018-11-17', time: '16:20:00'},
{date: '2018-11-17', time: '20:39:00'},
];
const res = newsArray.sort((a, b) =>
new Date(b.date + ' ' + b.time).getTime() - new Date(a.date + ' ' + a.time).getTime());
console.log(res);const newsArray = [
{date: '2018-11-17', time: '18:35:00'},
{date: '2018-11-17', time: '17:35:00'},
{date: '2018-11-17', time: '16:20:00'},
{date: '2018-11-17', time: '20:39:00'},
];
const res = newsArray.sort((a, b) =>
new Date(b.date + ' ' + b.time).getTime() - new Date(a.date + ' ' + a.time).getTime());
console.log(res);answered Nov 17 at 19:42
slider
6,3051129
answered Nov 17 at 19:42
slider
6,3051129
answered Nov 17 at 19:42
slider
6,3051129
answered Nov 17 at 19:42
slider
6,3051129
6,3051129
add a comment |
add a comment |
up vote
0
down vote
You're trying to construct a date from a string like '12:00:00' which is an invalid date.
Try combining .date and .time to make something Date can interpret:
this.newsArray.sort((a, b) =>
new Date(b.date + 'T' + b.time).getTime() - new Date(a.date + 'T' + a.time).getTime());
answered Nov 17 at 19:42
Jim B.
2,076828
add a comment |
up vote
0
down vote
You're trying to construct a date from a string like '12:00:00' which is an invalid date.
Try combining .date and .time to make something Date can interpret:
this.newsArray.sort((a, b) =>
new Date(b.date + 'T' + b.time).getTime() - new Date(a.date + 'T' + a.time).getTime());
answered Nov 17 at 19:42
Jim B.
2,076828
add a comment |
up vote
0
down vote
up vote
0
down vote
You're trying to construct a date from a string like '12:00:00' which is an invalid date.
Try combining .date and .time to make something Date can interpret:
this.newsArray.sort((a, b) =>
new Date(b.date + 'T' + b.time).getTime() - new Date(a.date + 'T' + a.time).getTime());
answered Nov 17 at 19:42
Jim B.
2,076828
You're trying to construct a date from a string like '12:00:00' which is an invalid date.
Try combining .date and .time to make something Date can interpret:
this.newsArray.sort((a, b) =>
new Date(b.date + 'T' + b.time).getTime() - new Date(a.date + 'T' + a.time).getTime());
answered Nov 17 at 19:42
Jim B.
2,076828
answered Nov 17 at 19:42
Jim B.
2,076828
answered Nov 17 at 19:42
Jim B.
2,076828
answered Nov 17 at 19:42
Jim B.
2,076828
2,076828
add a comment |
add a comment |
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1
Your code does not reference the
dateproperty at all.– TypeIA
Nov 17 at 19:36
sorting JSON?We usually sort Arrays that have an index
– El.
Nov 17 at 19:37
2
Please post your array as text, not as a screenshot.
– ggorlen
Nov 17 at 19:39
1
You need to compare the two date values correctly. See the constructor of Date and properly create a date object out of
item.dateanditem.time. Then, compare the two objects as described in this answer. There are also libraries for this case of date comparison (date-fns, moment.js, luxon, etc.)– ssc-hrep3
Nov 17 at 19:40