And Here is the Array:
If someone's result + GMath is more than others I want to place him first in the array.
I'm making an angular app. I need to filter it for the app. If you need the template or the ts file just comment in below.
2 Answers
What you need to do is use sort to subtract the sum of a from the sum of b like this:
let arr = [
{result: 5, GMath: 5},
{result: 2, GMath: 8},
{result: 4, GMath: 10},
{result: 1, GMath: 1}
]
arr.sort((a, b) => (b.result + b.GMath) - (a.result + a.GMath))
console.log(arr)
answered Sep 24, 2018 at 15:19
Get Off My Lawn
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2 Comments
davidkonrad
@Moumitaakter, be aware that you exclude IE users and people using "old" versions of their more modern browser -> caniuse.com/#feat=arrow-functions
Moumita akter
your code does work. But I don't understand arr.sort((a, b) => (b.result + b.GMath) - (a.result + a.GMath)) this line. Could you be more spesific. And why there is a - between two brackets
// const obj = { admissionStudents: {...} }; // assuming this is the object to begin with
let keys = Object.keys(obj.admissionStudents);
keys.sort((a, b) => {
return (obj.admissionStudents[b].result + obj.admissionStudents[b].GMath) - (obj.admissionStudents[a].result + obj.admissionStudents[a].GMath);
});
Now keys will be sorted, so frame the object using this.
New list,
newList = [];
keys.forEach((key) => {
newList.push(obj.admissionStudents[key]);
});
newList will be the sorted list.
Hope it helps.
place him first in the array.That's not a filter, it s a sort.. So do you just want the array sorting by "result + GMath"?