array of object data sort not working

Question

0: Object { gradeName: "A+", gradeMaxMarks: "89", gradeMinMarks: "80" }

1: Object { gradeName: "A", gradeMaxMarks: "79", gradeMinMarks: "70" }

2: Object { gradeName: "B+", gradeMaxMarks: "69", gradeMinMarks: "60" }

3: Object { gradeName: "B", gradeMaxMarks: "59", gradeMinMarks: "55" }

4: Object { gradeName: "C", gradeMaxMarks: "49", gradeMinMarks: "40" }

5: Object { gradeName: "D", gradeMaxMarks: "39", gradeMinMarks: "30" }

6: Object { gradeName: "A++", gradeMaxMarks: "100", gradeMinMarks: "90" }

length: 7

I have above object in JavaScript, it is not sorting properly. How can I resolve this?

looks like 0, then 1, then 2 ... all the waay to 6 (hard to read though) ... what order were you expecting? — Jaromanda X
– Jaromanda X, Commented Apr 9, 2018 at 4:51
no you aren't ... you have an array that is in the order you wrote it ... I see no attempt at sorting — Jaromanda X
– Jaromanda X, Commented Apr 9, 2018 at 4:53
yes, but you're not showing your sorting code - how can we help you fix that if you don't show it — Jaromanda X
– Jaromanda X, Commented Apr 9, 2018 at 5:00

Vikasdeep Singh · Accepted Answer · 2018-04-09 05:05:58Z

0

Use Javascript's Array.sort() method to sort array in Descending Order [100, 80, 60, 40, ....] (Your requirement) like below:

array.sort(function(a, b) {
  return b.gradeMaxMarks - a.gradeMaxMarks;
});

If you want to sort array in Ascending Order [10, 20, 40, 45, 60, ....] then do it like this:

array.sort(function(a, b) {
  return a.gradeMaxMarks - b.gradeMaxMarks;
});

Below is working code snippet:

var array = [{gradeName:"A+",gradeMaxMarks:"89",gradeMinMarks:"80"},{gradeName:"A",gradeMaxMarks:"79",gradeMinMarks:"70"},{gradeName:"B+",gradeMaxMarks:"69",gradeMinMarks:"60"},{gradeName:"B",gradeMaxMarks:"59",gradeMinMarks:"55"},{gradeName:"C",gradeMaxMarks:"49",gradeMinMarks:"40"},{gradeName:"D",gradeMaxMarks:"39",gradeMinMarks:"30"},{gradeName:"A++",gradeMaxMarks:"100",gradeMinMarks:"90"}];

array.sort(function(a, b) {
  return b.gradeMaxMarks - a.gradeMaxMarks;
});

console.log(array)

edited Apr 9, 2018 at 5:05

answered Apr 9, 2018 at 5:00

Vikasdeep Singh

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8 Comments

Sharath kumar Over a year ago

This one is not working for my data. Actually i have my data stored in local storage. The value 100 for A++ is fixed.

Vikasdeep Singh Over a year ago

@Sharathkumar what do you mean?

Vikasdeep Singh Over a year ago

@Sharathkumar click on Run code snippet the blue Button to see the output

user202729 Over a year ago

@Sharathkumar Edit your question to clarify it please.

Sharath kumar Over a year ago

In A++ gradeMaxMarks is 100. All other marks will have only 2 digits only. While sorting it will consider 100 as 10, I mean only first 2 digits it is considering

|

CertainPerformance · Accepted Answer · 2018-04-09 04:55:24Z

0

It looks like you forgot the sort part of the script.

const input = [{
    gradeName: "A+",
    gradeMaxMarks: "89",
    gradeMinMarks: "80"
  },
  {
    gradeName: "A",
    gradeMaxMarks: "79",
    gradeMinMarks: "70"
  },
  {
    gradeName: "B+",
    gradeMaxMarks: "69",
    gradeMinMarks: "60"
  },
  {
    gradeName: "B",
    gradeMaxMarks: "59",
    gradeMinMarks: "55"
  },
  {
    gradeName: "C",
    gradeMaxMarks: "49",
    gradeMinMarks: "40"
  },
  {
    gradeName: "D",
    gradeMaxMarks: "39",
    gradeMinMarks: "30"
  },
  {
    gradeName: "A++",
    gradeMaxMarks: "100",
    gradeMinMarks: "90"
  }
];

input.sort((a, b) => b.gradeMaxMarks - a.gradeMaxMarks);
console.log(input);

answered Apr 9, 2018 at 4:55

CertainPerformance

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1 Comment

Sharath kumar Over a year ago

In A++ gradeMaxMarks is 100. All other marks will have only 2 digits only. While sorting it will consider 100 as 10, I mean only first 2 digits it is considering

sridhar.. · Accepted Answer · 2018-04-09 05:49:43Z

0

var arr = [{
    gradeName: "A+",
    gradeMaxMarks: "89",
    gradeMinMarks: "80"
  },
  {
    gradeName: "A",
    gradeMaxMarks: "79",
    gradeMinMarks: "70"
  },
  {
    gradeName: "B+",
    gradeMaxMarks: "69",
    gradeMinMarks: "60"
  },
  {
    gradeName: "B",
    gradeMaxMarks: "59",
    gradeMinMarks: "55"
  },
  {
    gradeName: "C",
    gradeMaxMarks: "49",
    gradeMinMarks: "40"
  },
  {
    gradeName: "D",
    gradeMaxMarks: "39",
    gradeMinMarks: "30"
  },
  {
    gradeName: "A++",
    gradeMaxMarks: "100",
    gradeMinMarks: "90"
  }
]

arr.sort((a,b) => Number(b.gradeMaxMarks)-Number(a.gradeMaxMarks))
console.log(arr)

edited Apr 9, 2018 at 5:49

answered Apr 9, 2018 at 4:54

sridhar..

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1 Comment

Sharath kumar Over a year ago

In A++ gradeMaxMarks is 100. All other marks will have only 2 digits only. While sorting it will consider 100 as 10, I mean only first 2 digits it is considering

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